X-Git-Url: http://git.nikiroo.be/?a=blobdiff_plain;f=src%2Fjexer%2FTApplication.java;h=8b436ab9a99ec9219b9755ffce379c62d834e10f;hb=e8a11f986bfe2556e450d7b8ad6ef0059b369bbc;hp=5df59d9d4d9def15bfca59c6dd7cd564acc50f85;hpb=4328bb42c10743287dad5cf045f059ad109eb540;p=nikiroo-utils.git diff --git a/src/jexer/TApplication.java b/src/jexer/TApplication.java index 5df59d9..8b436ab 100644 --- a/src/jexer/TApplication.java +++ b/src/jexer/TApplication.java @@ -1,114 +1,674 @@ -/** - * Jexer - Java Text User Interface - demonstration program - * - * Version: $Id$ +/* + * Jexer - Java Text User Interface * - * Author: Kevin Lamonte, kevin.lamonte@gmail.com + * The MIT License (MIT) * - * License: LGPLv3 or later + * Copyright (C) 2017 Kevin Lamonte * - * Copyright: This module is licensed under the GNU Lesser General - * Public License Version 3. Please see the file "COPYING" in this - * directory for more information about the GNU Lesser General Public - * License Version 3. + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: * - * Copyright (C) 2015 Kevin Lamonte + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public License - * as published by the Free Software Foundation; either version 3 of - * the License, or (at your option) any later version. + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see - * http://www.gnu.org/licenses/, or write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA + * @author Kevin Lamonte [kevin.lamonte@gmail.com] + * @version 1 */ package jexer; import java.io.InputStream; +import java.io.IOException; import java.io.OutputStream; +import java.io.PrintWriter; +import java.io.Reader; import java.io.UnsupportedEncodingException; +import java.util.Collections; +import java.util.Date; +import java.util.HashMap; +import java.util.ArrayList; import java.util.LinkedList; import java.util.List; +import java.util.Map; import jexer.bits.CellAttributes; import jexer.bits.ColorTheme; -import jexer.bits.GraphicsChars; import jexer.event.TCommandEvent; import jexer.event.TInputEvent; import jexer.event.TKeypressEvent; +import jexer.event.TMenuEvent; import jexer.event.TMouseEvent; import jexer.event.TResizeEvent; import jexer.backend.Backend; +import jexer.backend.Screen; +import jexer.backend.SwingBackend; import jexer.backend.ECMA48Backend; +import jexer.backend.TWindowBackend; +import jexer.menu.TMenu; +import jexer.menu.TMenuItem; import static jexer.TCommand.*; import static jexer.TKeypress.*; /** - * TApplication sets up a full Text User Interface application. + * TApplication is the main driver class for a full Text User Interface + * application. It manages windows, provides a menu bar and status bar, and + * processes events received from the user. */ -public class TApplication { +public class TApplication implements Runnable { + + // ------------------------------------------------------------------------ + // Public constants ------------------------------------------------------- + // ------------------------------------------------------------------------ + + /** + * If true, emit thread stuff to System.err. + */ + private static final boolean debugThreads = false; + + /** + * If true, emit events being processed to System.err. + */ + private static final boolean debugEvents = false; + + /** + * If true, do "smart placement" on new windows that are not specified to + * be centered. + */ + private static final boolean smartWindowPlacement = true; + + /** + * Two backend types are available. + */ + public static enum BackendType { + /** + * A Swing JFrame. + */ + SWING, + + /** + * An ECMA48 / ANSI X3.64 / XTERM style terminal. + */ + ECMA48, + + /** + * Synonym for ECMA48. + */ + XTERM + } + + // ------------------------------------------------------------------------ + // Primary/secondary event handlers --------------------------------------- + // ------------------------------------------------------------------------ + + /** + * WidgetEventHandler is the main event consumer loop. There are at most + * two such threads in existence: the primary for normal case and a + * secondary that is used for TMessageBox, TInputBox, and similar. + */ + private class WidgetEventHandler implements Runnable { + /** + * The main application. + */ + private TApplication application; + + /** + * Whether or not this WidgetEventHandler is the primary or secondary + * thread. + */ + private boolean primary = true; + + /** + * Public constructor. + * + * @param application the main application + * @param primary if true, this is the primary event handler thread + */ + public WidgetEventHandler(final TApplication application, + final boolean primary) { + + this.application = application; + this.primary = primary; + } + + /** + * The consumer loop. + */ + public void run() { + + // Loop forever + while (!application.quit) { + + // Wait until application notifies me + while (!application.quit) { + try { + synchronized (application.drainEventQueue) { + if (application.drainEventQueue.size() > 0) { + break; + } + } + + synchronized (this) { + if (debugThreads) { + System.err.printf("%s %s sleep\n", this, + primary ? "primary" : "secondary"); + } + + this.wait(); + + if (debugThreads) { + System.err.printf("%s %s AWAKE\n", this, + primary ? "primary" : "secondary"); + } + + if ((!primary) + && (application.secondaryEventReceiver == null) + ) { + // Secondary thread, emergency exit. If we + // got here then something went wrong with + // the handoff between yield() and + // closeWindow(). + synchronized (application.primaryEventHandler) { + application.primaryEventHandler.notify(); + } + application.secondaryEventHandler = null; + throw new RuntimeException( + "secondary exited at wrong time"); + } + break; + } + } catch (InterruptedException e) { + // SQUASH + } + } + + // Wait for drawAll() or doIdle() to be done, then handle the + // events. + boolean oldLock = lockHandleEvent(); + assert (oldLock == false); + + // Pull all events off the queue + for (;;) { + TInputEvent event = null; + synchronized (application.drainEventQueue) { + if (application.drainEventQueue.size() == 0) { + break; + } + event = application.drainEventQueue.remove(0); + } + application.repaint = true; + if (primary) { + primaryHandleEvent(event); + } else { + secondaryHandleEvent(event); + } + if ((!primary) + && (application.secondaryEventReceiver == null) + ) { + // Secondary thread, time to exit. + + // DO NOT UNLOCK. Primary thread just came back from + // primaryHandleEvent() and will unlock in the else + // block below. Just wake it up. + synchronized (application.primaryEventHandler) { + application.primaryEventHandler.notify(); + } + // Now eliminate my reference so that + // wakeEventHandler() resumes working on the primary. + application.secondaryEventHandler = null; + + // All done! + return; + } + } // for (;;) + + // Unlock. Either I am primary thread, or I am secondary + // thread and still running. + oldLock = unlockHandleEvent(); + assert (oldLock == true); + + // I have done some work of some kind. Tell the main run() + // loop to wake up now. + synchronized (application) { + application.notify(); + } + + } // while (true) (main runnable loop) + } + } + + /** + * The primary event handler thread. + */ + private volatile WidgetEventHandler primaryEventHandler; + + /** + * The secondary event handler thread. + */ + private volatile WidgetEventHandler secondaryEventHandler; + + /** + * The widget receiving events from the secondary event handler thread. + */ + private volatile TWidget secondaryEventReceiver; + + /** + * Spinlock for the primary and secondary event handlers. + * WidgetEventHandler.run() is responsible for setting this value. + */ + private volatile boolean insideHandleEvent = false; + + /** + * Wake the sleeping active event handler. + */ + private void wakeEventHandler() { + if (secondaryEventHandler != null) { + synchronized (secondaryEventHandler) { + secondaryEventHandler.notify(); + } + } else { + assert (primaryEventHandler != null); + synchronized (primaryEventHandler) { + primaryEventHandler.notify(); + } + } + } + + /** + * Set the insideHandleEvent flag to true. lockoutEventHandlers() will + * spin indefinitely until unlockHandleEvent() is called. + * + * @return the old value of insideHandleEvent + */ + private boolean lockHandleEvent() { + if (debugThreads) { + System.err.printf(" >> lockHandleEvent(): oldValue %s", + insideHandleEvent); + } + boolean oldValue = true; + + synchronized (this) { + // Wait for TApplication.run() to finish using the global state + // before allowing further event processing. + while (lockoutHandleEvent == true) { + try { + // Backoff so that the backend can finish its work. + Thread.sleep(5); + } catch (InterruptedException e) { + // SQUASH + } + } + + oldValue = insideHandleEvent; + insideHandleEvent = true; + } + + if (debugThreads) { + System.err.printf(" ***\n"); + } + return oldValue; + } + + /** + * Set the insideHandleEvent flag to false. lockoutEventHandlers() will + * spin indefinitely until unlockHandleEvent() is called. + * + * @return the old value of insideHandleEvent + */ + private boolean unlockHandleEvent() { + if (debugThreads) { + System.err.printf(" << unlockHandleEvent(): oldValue %s\n", + insideHandleEvent); + } + synchronized (this) { + boolean oldValue = insideHandleEvent; + insideHandleEvent = false; + return oldValue; + } + } + + /** + * Spinlock for the primary and secondary event handlers. When true, the + * event handlers will spinlock wait before calling handleEvent(). + */ + private volatile boolean lockoutHandleEvent = false; + + /** + * TApplication.run() needs to be able rely on the global data structures + * being intact when calling doIdle() and drawAll(). Tell the event + * handlers to wait for an unlock before handling their events. + */ + private void stopEventHandlers() { + if (debugThreads) { + System.err.printf(">> stopEventHandlers()"); + } + + lockoutHandleEvent = true; + // Wait for the last event to finish processing before returning + // control to TApplication.run(). + while (insideHandleEvent == true) { + try { + // Backoff so that the event handler can finish its work. + Thread.sleep(1); + } catch (InterruptedException e) { + // SQUASH + } + } + + if (debugThreads) { + System.err.printf(" XXX\n"); + } + } + + /** + * TApplication.run() needs to be able rely on the global data structures + * being intact when calling doIdle() and drawAll(). Tell the event + * handlers that it is now OK to handle their events. + */ + private void startEventHandlers() { + if (debugThreads) { + System.err.printf("<< startEventHandlers()\n"); + } + lockoutHandleEvent = false; + } + + // ------------------------------------------------------------------------ + // TApplication attributes ------------------------------------------------ + // ------------------------------------------------------------------------ /** * Access to the physical screen, keyboard, and mouse. */ - public Backend backend; + private Backend backend; + + /** + * Get the Backend. + * + * @return the Backend + */ + public final Backend getBackend() { + return backend; + } + + /** + * Get the Screen. + * + * @return the Screen + */ + public final Screen getScreen() { + if (backend instanceof TWindowBackend) { + // We are being rendered to a TWindow. We can't use its + // getScreen() method because that is how it is rendering to a + // hardware backend somewhere. Instead use its getOtherScreen() + // method. + return ((TWindowBackend) backend).getOtherScreen(); + } else { + return backend.getScreen(); + } + } /** - * Actual mouse coordinate X + * Actual mouse coordinate X. */ private int mouseX; /** - * Actual mouse coordinate Y + * Actual mouse coordinate Y. */ private int mouseY; /** - * Event queue that will be drained by either primary or secondary Fiber + * Old version of mouse coordinate X. + */ + private int oldMouseX; + + /** + * Old version mouse coordinate Y. + */ + private int oldMouseY; + + /** + * Event queue that is filled by run(). + */ + private List fillEventQueue; + + /** + * Event queue that will be drained by either primary or secondary + * Thread. + */ + private List drainEventQueue; + + /** + * Top-level menus in this application. + */ + private List menus; + + /** + * Stack of activated sub-menus in this application. + */ + private List subMenus; + + /** + * The currently active menu. */ - private List eventQueue; + private TMenu activeMenu = null; + + /** + * Active keyboard accelerators. + */ + private Map accelerators; + + /** + * All menu items. + */ + private List menuItems; /** * Windows and widgets pull colors from this ColorTheme. */ - public ColorTheme theme; + private ColorTheme theme; + + /** + * Get the color theme. + * + * @return the theme + */ + public final ColorTheme getTheme() { + return theme; + } + + /** + * The top-level windows (but not menus). + */ + private List windows; + + /** + * The currently acive window. + */ + private TWindow activeWindow = null; + + /** + * Timers that are being ticked. + */ + private List timers; /** * When true, exit the application. */ - public boolean quit = false; + private volatile boolean quit = false; /** * When true, repaint the entire screen. */ - public boolean repaint = true; + private volatile boolean repaint = true; /** - * When true, just flush updates from the screen. + * Y coordinate of the top edge of the desktop. For now this is a + * constant. Someday it would be nice to have a multi-line menu or + * toolbars. */ - public boolean flush = false; + private static final int desktopTop = 1; /** - * Y coordinate of the top edge of the desktop. + * Get Y coordinate of the top edge of the desktop. + * + * @return Y coordinate of the top edge of the desktop */ - static public final int desktopTop = 1; + public final int getDesktopTop() { + return desktopTop; + } /** * Y coordinate of the bottom edge of the desktop. */ - public int desktopBottom; + private int desktopBottom; + + /** + * Get Y coordinate of the bottom edge of the desktop. + * + * @return Y coordinate of the bottom edge of the desktop + */ + public final int getDesktopBottom() { + return desktopBottom; + } + + /** + * An optional TDesktop background window that is drawn underneath + * everything else. + */ + private TDesktop desktop; + + /** + * Set the TDesktop instance. + * + * @param desktop a TDesktop instance, or null to remove the one that is + * set + */ + public final void setDesktop(final TDesktop desktop) { + if (this.desktop != null) { + this.desktop.onClose(); + } + this.desktop = desktop; + } + + /** + * Get the TDesktop instance. + * + * @return the desktop, or null if it is not set + */ + public final TDesktop getDesktop() { + return desktop; + } + + /** + * Get the current active window. + * + * @return the active window, or null if it is not set + */ + public final TWindow getActiveWindow() { + return activeWindow; + } + + /** + * Get a (shallow) copy of the window list. + * + * @return a copy of the list of windows for this application + */ + public final List getAllWindows() { + List result = new LinkedList(); + result.addAll(windows); + return result; + } + + /** + * If true, focus follows mouse: windows automatically raised if the + * mouse passes over them. + */ + private boolean focusFollowsMouse = false; + + /** + * Get focusFollowsMouse flag. + * + * @return true if focus follows mouse: windows automatically raised if + * the mouse passes over them + */ + public boolean getFocusFollowsMouse() { + return focusFollowsMouse; + } + + /** + * Set focusFollowsMouse flag. + * + * @param focusFollowsMouse if true, focus follows mouse: windows + * automatically raised if the mouse passes over them + */ + public void setFocusFollowsMouse(final boolean focusFollowsMouse) { + this.focusFollowsMouse = focusFollowsMouse; + } + + // ------------------------------------------------------------------------ + // General behavior ------------------------------------------------------- + // ------------------------------------------------------------------------ + + /** + * Display the about dialog. + */ + protected void showAboutDialog() { + messageBox("About", "Jexer Version " + + this.getClass().getPackage().getImplementationVersion(), + TMessageBox.Type.OK); + } + + // ------------------------------------------------------------------------ + // Constructors ----------------------------------------------------------- + // ------------------------------------------------------------------------ /** * Public constructor. * + * @param backendType BackendType.XTERM, BackendType.ECMA48 or + * BackendType.SWING + * @throws UnsupportedEncodingException if an exception is thrown when + * creating the InputStreamReader + */ + public TApplication(final BackendType backendType) + throws UnsupportedEncodingException { + + switch (backendType) { + case SWING: + // The default SwingBackend is 80x25, 20 pt font. If you want to + // change that, you can pass the extra arguments to the + // SwingBackend constructor here. For example, if you wanted + // 90x30, 16 pt font: + // + // backend = new SwingBackend(this, 90, 30, 16); + backend = new SwingBackend(this); + break; + case XTERM: + // Fall through... + case ECMA48: + backend = new ECMA48Backend(this, null, null); + break; + default: + throw new IllegalArgumentException("Invalid backend type: " + + backendType); + } + TApplicationImpl(); + } + + /** + * Public constructor. The backend type will be BackendType.ECMA48. + * * @param input an InputStream connected to the remote user, or null for * System.in. If System.in is used, then on non-Windows systems it will * be put in raw mode; shutdown() will (blindly!) put System.in in cooked @@ -116,323 +676,2064 @@ public class TApplication { * @param output an OutputStream connected to the remote user, or null * for System.out. output is always converted to a Writer with UTF-8 * encoding. + * @throws UnsupportedEncodingException if an exception is thrown when + * creating the InputStreamReader */ - public TApplication(InputStream input, OutputStream output) throws UnsupportedEncodingException { + public TApplication(final InputStream input, + final OutputStream output) throws UnsupportedEncodingException { - backend = new ECMA48Backend(input, output); - theme = new ColorTheme(); - desktopBottom = backend.screen.getHeight() - 1; - eventQueue = new LinkedList(); + backend = new ECMA48Backend(this, input, output); + TApplicationImpl(); } /** - * Invert the cell at the mouse pointer position. + * Public constructor. The backend type will be BackendType.ECMA48. + * + * @param input the InputStream underlying 'reader'. Its available() + * method is used to determine if reader.read() will block or not. + * @param reader a Reader connected to the remote user. + * @param writer a PrintWriter connected to the remote user. + * @param setRawMode if true, set System.in into raw mode with stty. + * This should in general not be used. It is here solely for Demo3, + * which uses System.in. + * @throws IllegalArgumentException if input, reader, or writer are null. */ - private void drawMouse() { - CellAttributes attr = backend.screen.getAttrXY(mouseX, mouseY); - attr.foreColor = attr.foreColor.invert(); - attr.backColor = attr.backColor.invert(); - backend.screen.putAttrXY(mouseX, mouseY, attr, false); - flush = true; + public TApplication(final InputStream input, final Reader reader, + final PrintWriter writer, final boolean setRawMode) { - /* - if (windows.length == 0) { - repaint = true; - } - */ - // TODO: remove this repaint after the above if (windows.length == 0) - // can be used again. - repaint = true; + backend = new ECMA48Backend(this, input, reader, writer, setRawMode); + TApplicationImpl(); } /** - * Draw everything. + * Public constructor. The backend type will be BackendType.ECMA48. + * + * @param input the InputStream underlying 'reader'. Its available() + * method is used to determine if reader.read() will block or not. + * @param reader a Reader connected to the remote user. + * @param writer a PrintWriter connected to the remote user. + * @throws IllegalArgumentException if input, reader, or writer are null. */ - final public void drawAll() { - if ((flush) && (!repaint)) { - backend.flushScreen(); - flush = false; - return; - } - - if (!repaint) { - return; - } - - // If true, the cursor is not visible - boolean cursor = false; - - // Start with a clean screen - backend.screen.clear(); - - // Draw the background - CellAttributes background = theme.getColor("tapplication.background"); - backend.screen.putAll(GraphicsChars.HATCH, background); - - /* - // Draw each window in reverse Z order - TWindow [] sorted = windows.dup; - sorted.sort.reverse; - foreach (w; sorted) { - w.drawChildren(); - } - - // Draw the blank menubar line - reset the screen clipping first so - // it won't trim it out. - backend.screen.resetClipping(); - backend.screen.hLineXY(0, 0, backend.screen.getWidth(), ' ', - theme.getColor("tmenu")); - // Now draw the menus. - int x = 1; - foreach (m; menus) { - CellAttributes menuColor; - CellAttributes menuMnemonicColor; - if (m.active) { - menuColor = theme.getColor("tmenu.highlighted"); - menuMnemonicColor = theme.getColor("tmenu.mnemonic.highlighted"); - } else { - menuColor = theme.getColor("tmenu"); - menuMnemonicColor = theme.getColor("tmenu.mnemonic"); - } - // Draw the menu title - backend.screen.hLineXY(x, 0, cast(int)m.title.length + 2, ' ', - menuColor); - backend.screen.putStrXY(x + 1, 0, m.title, menuColor); - // Draw the highlight character - backend.screen.putCharXY(x + 1 + m.mnemonic.shortcutIdx, 0, - m.mnemonic.shortcut, menuMnemonicColor); - - if (m.active) { - m.drawChildren(); - // Reset the screen clipping so we can draw the next title. - backend.screen.resetClipping(); - } - x += m.title.length + 2; - } - - foreach (m; subMenus) { - // Reset the screen clipping so we can draw the next sub-menu. - backend.screen.resetClipping(); - m.drawChildren(); - } - */ - - // Draw the mouse pointer - drawMouse(); - - /* - // Place the cursor if it is visible - TWidget activeWidget = null; - if (sorted.length > 0) { - activeWidget = sorted[$ - 1].getActiveChild(); - if (activeWidget.hasCursor) { - backend.screen.putCursor(true, activeWidget.getCursorAbsoluteX(), - activeWidget.getCursorAbsoluteY()); - cursor = true; - } - } - - // Kill the cursor - if (cursor == false) { - backend.screen.hideCursor(); - } - */ - - // Flush the screen contents - backend.flushScreen(); - - repaint = false; - flush = false; - } - - /** - * Run this application until it exits, using stdin and stdout - */ - public final void run() { - - while (quit == false) { - // Timeout is in milliseconds, so default timeout after 1 second - // of inactivity. - int timeout = getSleepTime(1000); - // std.stdio.stderr.writefln("poll() timeout: %d", timeout); - - if (eventQueue.size() > 0) { - // Do not wait if there are definitely events waiting to be - // processed or a screen redraw to do. - timeout = 0; - } - - // Pull any pending input events - List events = backend.getEvents(timeout); - metaHandleEvents(events); - - // Process timers and call doIdle()'s - doIdle(); - - // Update the screen - drawAll(); - } - - /* - - // Shutdown the fibers - eventQueue.length = 0; - if (secondaryEventFiber !is null) { - assert(secondaryEventReceiver !is null); - secondaryEventReceiver = null; - if (secondaryEventFiber.state == Fiber.State.HOLD) { - // Wake up the secondary handler so that it can exit. - secondaryEventFiber.call(); - } - } - - if (primaryEventFiber.state == Fiber.State.HOLD) { - // Wake up the primary handler so that it can exit. - primaryEventFiber.call(); - } - */ - - backend.shutdown(); + public TApplication(final InputStream input, final Reader reader, + final PrintWriter writer) { + + this(input, reader, writer, false); } /** - * Peek at certain application-level events, add to eventQueue, and wake - * up the consuming Fiber. - * - * @param events the input events to consume - */ - private void metaHandleEvents(List events) { - - for (TInputEvent event: events) { - - /* - System.err.printf(String.format("metaHandleEvents event: %s\n", - event)); System.err.flush(); - */ - - if (quit == true) { - // Do no more processing if the application is already trying - // to exit. - return; - } - - // DEBUG - if (event instanceof TKeypressEvent) { - TKeypressEvent keypress = (TKeypressEvent)event; - if (keypress.key.equals(kbAltX)) { - quit = true; - return; - } - } - // DEBUG - - // Special application-wide events ------------------------------- - - // Abort everything - if (event instanceof TCommandEvent) { - TCommandEvent command = (TCommandEvent)event; - if (command.cmd.equals(cmAbort)) { - quit = true; - return; - } - } - - // Screen resize - if (event instanceof TResizeEvent) { - TResizeEvent resize = (TResizeEvent)event; - backend.screen.setDimensions(resize.width, resize.height); - desktopBottom = backend.screen.getHeight() - 1; - repaint = true; - mouseX = 0; - mouseY = 0; - continue; - } - - // Peek at the mouse position - if (event instanceof TMouseEvent) { - TMouseEvent mouse = (TMouseEvent)event; - if ((mouseX != mouse.x) || (mouseY != mouse.y)) { - mouseX = mouse.x; - mouseY = mouse.y; - drawMouse(); - } - } - - /* - - // Put into the main queue - addEvent(event); - - // Have one of the two consumer Fibers peel the events off - // the queue. - if (secondaryEventFiber !is null) { - assert(secondaryEventFiber.state == Fiber.State.HOLD); - - // Wake up the secondary handler for these events - secondaryEventFiber.call(); - } else { - assert(primaryEventFiber.state == Fiber.State.HOLD); - - // Wake up the primary handler for these events - primaryEventFiber.call(); - } - */ - - } // for (TInputEvent event: events) + * Public constructor. This hook enables use with new non-Jexer + * backends. + * + * @param backend a Backend that is already ready to go. + */ + public TApplication(final Backend backend) { + this.backend = backend; + backend.setListener(this); + TApplicationImpl(); + } + + /** + * Finish construction once the backend is set. + */ + private void TApplicationImpl() { + theme = new ColorTheme(); + desktopBottom = getScreen().getHeight() - 1; + fillEventQueue = new ArrayList(); + drainEventQueue = new ArrayList(); + windows = new LinkedList(); + menus = new LinkedList(); + subMenus = new LinkedList(); + timers = new LinkedList(); + accelerators = new HashMap(); + menuItems = new ArrayList(); + desktop = new TDesktop(this); + // Setup the main consumer thread + primaryEventHandler = new WidgetEventHandler(this, true); + (new Thread(primaryEventHandler)).start(); } + // ------------------------------------------------------------------------ + // Screen refresh loop ---------------------------------------------------- + // ------------------------------------------------------------------------ + /** - * Do stuff when there is no user input. + * Invert the cell color at a position. This is used to track the mouse. + * + * @param x column position + * @param y row position */ - private void doIdle() { - /* - // Now run any timers that have timed out - auto now = Clock.currTime; - TTimer [] keepTimers; - foreach (t; timers) { - if (t.nextTick < now) { - t.tick(); - if (t.recurring == true) { - keepTimers ~= t; - } - } else { - keepTimers ~= t; - } - } - timers = keepTimers; - - // Call onIdle's - foreach (w; windows) { - w.onIdle(); - } - */ + private void invertCell(final int x, final int y) { + if (debugThreads) { + System.err.printf("invertCell() %d %d\n", x, y); + } + CellAttributes attr = getScreen().getAttrXY(x, y); + attr.setForeColor(attr.getForeColor().invert()); + attr.setBackColor(attr.getBackColor().invert()); + getScreen().putAttrXY(x, y, attr, false); } /** - * Get the amount of time I can sleep before missing a Timer tick. + * Draw everything. + */ + private void drawAll() { + if (debugThreads) { + System.err.printf("drawAll() enter\n"); + } + + if (!repaint) { + if (debugThreads) { + System.err.printf("drawAll() !repaint\n"); + } + synchronized (getScreen()) { + if ((oldMouseX != mouseX) || (oldMouseY != mouseY)) { + // The only thing that has happened is the mouse moved. + // Clear the old position and draw the new position. + invertCell(oldMouseX, oldMouseY); + invertCell(mouseX, mouseY); + oldMouseX = mouseX; + oldMouseY = mouseY; + } + if (getScreen().isDirty()) { + backend.flushScreen(); + } + return; + } + } + + if (debugThreads) { + System.err.printf("drawAll() REDRAW\n"); + } + + // If true, the cursor is not visible + boolean cursor = false; + + // Start with a clean screen + getScreen().clear(); + + // Draw the desktop + if (desktop != null) { + desktop.drawChildren(); + } + + // Draw each window in reverse Z order + List sorted = new LinkedList(windows); + Collections.sort(sorted); + TWindow topLevel = null; + if (sorted.size() > 0) { + topLevel = sorted.get(0); + } + Collections.reverse(sorted); + for (TWindow window: sorted) { + if (window.isShown()) { + window.drawChildren(); + } + } + + // Draw the blank menubar line - reset the screen clipping first so + // it won't trim it out. + getScreen().resetClipping(); + getScreen().hLineXY(0, 0, getScreen().getWidth(), ' ', + theme.getColor("tmenu")); + // Now draw the menus. + int x = 1; + for (TMenu menu: menus) { + CellAttributes menuColor; + CellAttributes menuMnemonicColor; + if (menu.isActive()) { + menuColor = theme.getColor("tmenu.highlighted"); + menuMnemonicColor = theme.getColor("tmenu.mnemonic.highlighted"); + topLevel = menu; + } else { + menuColor = theme.getColor("tmenu"); + menuMnemonicColor = theme.getColor("tmenu.mnemonic"); + } + // Draw the menu title + getScreen().hLineXY(x, 0, menu.getTitle().length() + 2, ' ', + menuColor); + getScreen().putStringXY(x + 1, 0, menu.getTitle(), menuColor); + // Draw the highlight character + getScreen().putCharXY(x + 1 + menu.getMnemonic().getShortcutIdx(), + 0, menu.getMnemonic().getShortcut(), menuMnemonicColor); + + if (menu.isActive()) { + menu.drawChildren(); + // Reset the screen clipping so we can draw the next title. + getScreen().resetClipping(); + } + x += menu.getTitle().length() + 2; + } + + for (TMenu menu: subMenus) { + // Reset the screen clipping so we can draw the next sub-menu. + getScreen().resetClipping(); + menu.drawChildren(); + } + + // Draw the status bar of the top-level window + TStatusBar statusBar = null; + if (topLevel != null) { + statusBar = topLevel.getStatusBar(); + } + if (statusBar != null) { + getScreen().resetClipping(); + statusBar.setWidth(getScreen().getWidth()); + statusBar.setY(getScreen().getHeight() - topLevel.getY()); + statusBar.draw(); + } else { + CellAttributes barColor = new CellAttributes(); + barColor.setTo(getTheme().getColor("tstatusbar.text")); + getScreen().hLineXY(0, desktopBottom, getScreen().getWidth(), ' ', + barColor); + } + + // Draw the mouse pointer + invertCell(mouseX, mouseY); + oldMouseX = mouseX; + oldMouseY = mouseY; + + // Place the cursor if it is visible + TWidget activeWidget = null; + if (sorted.size() > 0) { + activeWidget = sorted.get(sorted.size() - 1).getActiveChild(); + if (activeWidget.isCursorVisible()) { + getScreen().putCursor(true, activeWidget.getCursorAbsoluteX(), + activeWidget.getCursorAbsoluteY()); + cursor = true; + } + } + + // Kill the cursor + if (!cursor) { + getScreen().hideCursor(); + } + + // Flush the screen contents + if (getScreen().isDirty()) { + backend.flushScreen(); + } + + repaint = false; + } + + // ------------------------------------------------------------------------ + // Main loop -------------------------------------------------------------- + // ------------------------------------------------------------------------ + + /** + * Force this application to exit. + */ + public void exit() { + quit = true; + } + + /** + * Run this application until it exits. + */ + public void run() { + while (!quit) { + // Timeout is in milliseconds, so default timeout after 1 second + // of inactivity. + long timeout = 1000; + + // If I've got no updates to render, wait for something from the + // backend or a timer. + if (!repaint + && ((mouseX == oldMouseX) && (mouseY == oldMouseY)) + ) { + // Never sleep longer than 50 millis. We need time for + // windows with background tasks to update the display, and + // still flip buffers reasonably quickly in + // backend.flushPhysical(). + timeout = getSleepTime(50); + } + + if (timeout > 0) { + // As of now, I've got nothing to do: no I/O, nothing from + // the consumer threads, no timers that need to run ASAP. So + // wait until either the backend or the consumer threads have + // something to do. + try { + if (debugThreads) { + System.err.println("sleep " + timeout + " millis"); + } + synchronized (this) { + this.wait(timeout); + } + } catch (InterruptedException e) { + // I'm awake and don't care why, let's see what's going + // on out there. + } + repaint = true; + } + + // Prevent stepping on the primary or secondary event handler. + stopEventHandlers(); + + // Pull any pending I/O events + backend.getEvents(fillEventQueue); + + // Dispatch each event to the appropriate handler, one at a time. + for (;;) { + TInputEvent event = null; + if (fillEventQueue.size() == 0) { + break; + } + event = fillEventQueue.remove(0); + metaHandleEvent(event); + } + + // Wake a consumer thread if we have any pending events. + if (drainEventQueue.size() > 0) { + wakeEventHandler(); + } + + // Process timers and call doIdle()'s + doIdle(); + + // Update the screen + synchronized (getScreen()) { + drawAll(); + } + + // Let the event handlers run again. + startEventHandlers(); + + } // while (!quit) + + // Shutdown the event consumer threads + if (secondaryEventHandler != null) { + synchronized (secondaryEventHandler) { + secondaryEventHandler.notify(); + } + } + if (primaryEventHandler != null) { + synchronized (primaryEventHandler) { + primaryEventHandler.notify(); + } + } + + // Shutdown the user I/O thread(s) + backend.shutdown(); + + // Close all the windows. This gives them an opportunity to release + // resources. + closeAllWindows(); + + } + + /** + * Peek at certain application-level events, add to eventQueue, and wake + * up the consuming Thread. * - * @param timeout = initial (maximum) timeout - * @return number of milliseconds between now and the next timer event + * @param event the input event to consume */ - protected int getSleepTime(int timeout) { - /* - auto now = Clock.currTime; - auto sleepTime = dur!("msecs")(timeout); - foreach (t; timers) { - if (t.nextTick < now) { - return 0; - } - if ((t.nextTick > now) && - ((t.nextTick - now) < sleepTime) - ) { - sleepTime = t.nextTick - now; - } - } - assert(sleepTime.total!("msecs")() >= 0); - return cast(uint)sleepTime.total!("msecs")(); - */ - return 0; + private void metaHandleEvent(final TInputEvent event) { + + if (debugEvents) { + System.err.printf(String.format("metaHandleEvents event: %s\n", + event)); System.err.flush(); + } + + if (quit) { + // Do no more processing if the application is already trying + // to exit. + return; + } + + // Special application-wide events ------------------------------- + + // Abort everything + if (event instanceof TCommandEvent) { + TCommandEvent command = (TCommandEvent) event; + if (command.getCmd().equals(cmAbort)) { + quit = true; + return; + } + } + + // Screen resize + if (event instanceof TResizeEvent) { + TResizeEvent resize = (TResizeEvent) event; + synchronized (getScreen()) { + getScreen().setDimensions(resize.getWidth(), + resize.getHeight()); + desktopBottom = getScreen().getHeight() - 1; + mouseX = 0; + mouseY = 0; + oldMouseX = 0; + oldMouseY = 0; + } + if (desktop != null) { + desktop.setDimensions(0, 0, resize.getWidth(), + resize.getHeight() - 1); + } + return; + } + + // Put into the main queue + drainEventQueue.add(event); + } + + /** + * Dispatch one event to the appropriate widget or application-level + * event handler. This is the primary event handler, it has the normal + * application-wide event handling. + * + * @param event the input event to consume + * @see #secondaryHandleEvent(TInputEvent event) + */ + private void primaryHandleEvent(final TInputEvent event) { + + if (debugEvents) { + System.err.printf("Handle event: %s\n", event); + } + + // Special application-wide events ----------------------------------- + + // Peek at the mouse position + if (event instanceof TMouseEvent) { + TMouseEvent mouse = (TMouseEvent) event; + if ((mouseX != mouse.getX()) || (mouseY != mouse.getY())) { + oldMouseX = mouseX; + oldMouseY = mouseY; + mouseX = mouse.getX(); + mouseY = mouse.getY(); + } + + // See if we need to switch focus to another window or the menu + checkSwitchFocus((TMouseEvent) event); + } + + // Handle menu events + if ((activeMenu != null) && !(event instanceof TCommandEvent)) { + TMenu menu = activeMenu; + + if (event instanceof TMouseEvent) { + TMouseEvent mouse = (TMouseEvent) event; + + while (subMenus.size() > 0) { + TMenu subMenu = subMenus.get(subMenus.size() - 1); + if (subMenu.mouseWouldHit(mouse)) { + break; + } + if ((mouse.getType() == TMouseEvent.Type.MOUSE_MOTION) + && (!mouse.isMouse1()) + && (!mouse.isMouse2()) + && (!mouse.isMouse3()) + && (!mouse.isMouseWheelUp()) + && (!mouse.isMouseWheelDown()) + ) { + break; + } + // We navigated away from a sub-menu, so close it + closeSubMenu(); + } + + // Convert the mouse relative x/y to menu coordinates + assert (mouse.getX() == mouse.getAbsoluteX()); + assert (mouse.getY() == mouse.getAbsoluteY()); + if (subMenus.size() > 0) { + menu = subMenus.get(subMenus.size() - 1); + } + mouse.setX(mouse.getX() - menu.getX()); + mouse.setY(mouse.getY() - menu.getY()); + } + menu.handleEvent(event); + return; + } + + if (event instanceof TKeypressEvent) { + TKeypressEvent keypress = (TKeypressEvent) event; + + // See if this key matches an accelerator, and is not being + // shortcutted by the active window, and if so dispatch the menu + // event. + boolean windowWillShortcut = false; + if (activeWindow != null) { + assert (activeWindow.isShown()); + if (activeWindow.isShortcutKeypress(keypress.getKey())) { + // We do not process this key, it will be passed to the + // window instead. + windowWillShortcut = true; + } + } + + if (!windowWillShortcut && !modalWindowActive()) { + TKeypress keypressLowercase = keypress.getKey().toLowerCase(); + TMenuItem item = null; + synchronized (accelerators) { + item = accelerators.get(keypressLowercase); + } + if (item != null) { + if (item.isEnabled()) { + // Let the menu item dispatch + item.dispatch(); + return; + } + } + + // Handle the keypress + if (onKeypress(keypress)) { + return; + } + } + } + + if (event instanceof TCommandEvent) { + if (onCommand((TCommandEvent) event)) { + return; + } + } + + if (event instanceof TMenuEvent) { + if (onMenu((TMenuEvent) event)) { + return; + } + } + + // Dispatch events to the active window ------------------------------- + boolean dispatchToDesktop = true; + TWindow window = activeWindow; + if (window != null) { + assert (window.isActive()); + assert (window.isShown()); + if (event instanceof TMouseEvent) { + TMouseEvent mouse = (TMouseEvent) event; + // Convert the mouse relative x/y to window coordinates + assert (mouse.getX() == mouse.getAbsoluteX()); + assert (mouse.getY() == mouse.getAbsoluteY()); + mouse.setX(mouse.getX() - window.getX()); + mouse.setY(mouse.getY() - window.getY()); + + if (window.mouseWouldHit(mouse)) { + dispatchToDesktop = false; + } + } else if (event instanceof TKeypressEvent) { + dispatchToDesktop = false; + } + + if (debugEvents) { + System.err.printf("TApplication dispatch event: %s\n", + event); + } + window.handleEvent(event); + } + if (dispatchToDesktop) { + // This event is fair game for the desktop to process. + if (desktop != null) { + desktop.handleEvent(event); + } + } + } + + /** + * Dispatch one event to the appropriate widget or application-level + * event handler. This is the secondary event handler used by certain + * special dialogs (currently TMessageBox and TFileOpenBox). + * + * @param event the input event to consume + * @see #primaryHandleEvent(TInputEvent event) + */ + private void secondaryHandleEvent(final TInputEvent event) { + // Peek at the mouse position + if (event instanceof TMouseEvent) { + TMouseEvent mouse = (TMouseEvent) event; + if ((mouseX != mouse.getX()) || (mouseY != mouse.getY())) { + oldMouseX = mouseX; + oldMouseY = mouseY; + mouseX = mouse.getX(); + mouseY = mouse.getY(); + } + } + + secondaryEventReceiver.handleEvent(event); + } + + /** + * Enable a widget to override the primary event thread. + * + * @param widget widget that will receive events + */ + public final void enableSecondaryEventReceiver(final TWidget widget) { + assert (secondaryEventReceiver == null); + assert (secondaryEventHandler == null); + assert ((widget instanceof TMessageBox) + || (widget instanceof TFileOpenBox)); + secondaryEventReceiver = widget; + secondaryEventHandler = new WidgetEventHandler(this, false); + (new Thread(secondaryEventHandler)).start(); + } + + /** + * Yield to the secondary thread. + */ + public final void yield() { + assert (secondaryEventReceiver != null); + // This is where we handoff the event handler lock from the primary + // to secondary thread. We unlock here, and in a future loop the + // secondary thread locks again. When it gives up, we have the + // single lock back. + boolean oldLock = unlockHandleEvent(); + assert (oldLock); + + while (secondaryEventReceiver != null) { + synchronized (primaryEventHandler) { + try { + primaryEventHandler.wait(); + } catch (InterruptedException e) { + // SQUASH + } + } + } + } + + /** + * Do stuff when there is no user input. + */ + private void doIdle() { + if (debugThreads) { + System.err.printf("doIdle()\n"); + } + + // Now run any timers that have timed out + Date now = new Date(); + List keepTimers = new LinkedList(); + for (TTimer timer: timers) { + if (timer.getNextTick().getTime() <= now.getTime()) { + timer.tick(); + if (timer.recurring) { + keepTimers.add(timer); + } + } else { + keepTimers.add(timer); + } + } + timers = keepTimers; + + // Call onIdle's + for (TWindow window: windows) { + window.onIdle(); + } + if (desktop != null) { + desktop.onIdle(); + } + } + + // ------------------------------------------------------------------------ + // TWindow management ----------------------------------------------------- + // ------------------------------------------------------------------------ + + /** + * Return the total number of windows. + * + * @return the total number of windows + */ + public final int windowCount() { + return windows.size(); + } + + /** + * Return the number of windows that are showing. + * + * @return the number of windows that are showing on screen + */ + public final int shownWindowCount() { + int n = 0; + for (TWindow w: windows) { + if (w.isShown()) { + n++; + } + } + return n; + } + + /** + * Return the number of windows that are hidden. + * + * @return the number of windows that are hidden + */ + public final int hiddenWindowCount() { + int n = 0; + for (TWindow w: windows) { + if (w.isHidden()) { + n++; + } + } + return n; + } + + /** + * Check if a window instance is in this application's window list. + * + * @param window window to look for + * @return true if this window is in the list + */ + public final boolean hasWindow(final TWindow window) { + if (windows.size() == 0) { + return false; + } + for (TWindow w: windows) { + if (w == window) { + assert (window.getApplication() == this); + return true; + } + } + return false; + } + + /** + * Activate a window: bring it to the top and have it receive events. + * + * @param window the window to become the new active window + */ + public void activateWindow(final TWindow window) { + if (hasWindow(window) == false) { + /* + * Someone has a handle to a window I don't have. Ignore this + * request. + */ + return; + } + + assert (windows.size() > 0); + + if (window.isHidden()) { + // Unhiding will also activate. + showWindow(window); + return; + } + assert (window.isShown()); + + if (windows.size() == 1) { + assert (window == windows.get(0)); + if (activeWindow == null) { + activeWindow = window; + window.setZ(0); + activeWindow.setActive(true); + activeWindow.onFocus(); + } + + assert (window.isActive()); + assert (activeWindow == window); + return; + } + + if (activeWindow == window) { + assert (window.isActive()); + + // Window is already active, do nothing. + return; + } + + assert (!window.isActive()); + if (activeWindow != null) { + assert (activeWindow.getZ() == 0); + + activeWindow.onUnfocus(); + activeWindow.setActive(false); + activeWindow.setZ(window.getZ()); + } + activeWindow = window; + activeWindow.setZ(0); + activeWindow.setActive(true); + activeWindow.onFocus(); + return; + } + + /** + * Hide a window. + * + * @param window the window to hide + */ + public void hideWindow(final TWindow window) { + if (hasWindow(window) == false) { + /* + * Someone has a handle to a window I don't have. Ignore this + * request. + */ + return; + } + + assert (windows.size() > 0); + + if (!window.hidden) { + if (window == activeWindow) { + if (shownWindowCount() > 1) { + switchWindow(true); + } else { + activeWindow = null; + window.setActive(false); + window.onUnfocus(); + } + } + window.hidden = true; + window.onHide(); + } + } + + /** + * Show a window. + * + * @param window the window to show + */ + public void showWindow(final TWindow window) { + if (hasWindow(window) == false) { + /* + * Someone has a handle to a window I don't have. Ignore this + * request. + */ + return; + } + + assert (windows.size() > 0); + + if (window.hidden) { + window.hidden = false; + window.onShow(); + activateWindow(window); + } + } + + /** + * Close window. Note that the window's destructor is NOT called by this + * method, instead the GC is assumed to do the cleanup. + * + * @param window the window to remove + */ + public final void closeWindow(final TWindow window) { + if (hasWindow(window) == false) { + /* + * Someone has a handle to a window I don't have. Ignore this + * request. + */ + return; + } + + synchronized (windows) { + int z = window.getZ(); + window.setZ(-1); + window.onUnfocus(); + Collections.sort(windows); + windows.remove(0); + activeWindow = null; + for (TWindow w: windows) { + if (w.getZ() > z) { + w.setZ(w.getZ() - 1); + if (w.getZ() == 0) { + w.setActive(true); + w.onFocus(); + assert (activeWindow == null); + activeWindow = w; + } else { + if (w.isActive()) { + w.setActive(false); + w.onUnfocus(); + } + } + } + } + } + + // Perform window cleanup + window.onClose(); + + // Check if we are closing a TMessageBox or similar + if (secondaryEventReceiver != null) { + assert (secondaryEventHandler != null); + + // Do not send events to the secondaryEventReceiver anymore, the + // window is closed. + secondaryEventReceiver = null; + + // Wake the secondary thread, it will wake the primary as it + // exits. + synchronized (secondaryEventHandler) { + secondaryEventHandler.notify(); + } + } + + // Permit desktop to be active if it is the only thing left. + if (desktop != null) { + if (windows.size() == 0) { + desktop.setActive(true); + } + } + } + + /** + * Switch to the next window. + * + * @param forward if true, then switch to the next window in the list, + * otherwise switch to the previous window in the list + */ + public final void switchWindow(final boolean forward) { + // Only switch if there are multiple visible windows + if (shownWindowCount() < 2) { + return; + } + assert (activeWindow != null); + + synchronized (windows) { + + // Swap z/active between active window and the next in the list + int activeWindowI = -1; + for (int i = 0; i < windows.size(); i++) { + if (windows.get(i) == activeWindow) { + assert (activeWindow.isActive()); + activeWindowI = i; + break; + } else { + assert (!windows.get(0).isActive()); + } + } + assert (activeWindowI >= 0); + + // Do not switch if a window is modal + if (activeWindow.isModal()) { + return; + } + + int nextWindowI = activeWindowI; + for (;;) { + if (forward) { + nextWindowI++; + nextWindowI %= windows.size(); + } else { + nextWindowI--; + if (nextWindowI < 0) { + nextWindowI = windows.size() - 1; + } + } + + if (windows.get(nextWindowI).isShown()) { + activateWindow(windows.get(nextWindowI)); + break; + } + } + } // synchronized (windows) + + } + + /** + * Add a window to my window list and make it active. + * + * @param window new window to add + */ + public final void addWindow(final TWindow window) { + + // Do not add menu windows to the window list. + if (window instanceof TMenu) { + return; + } + + // Do not add the desktop to the window list. + if (window instanceof TDesktop) { + return; + } + + synchronized (windows) { + // Do not allow a modal window to spawn a non-modal window. If a + // modal window is active, then this window will become modal + // too. + if (modalWindowActive()) { + window.flags |= TWindow.MODAL; + window.flags |= TWindow.CENTERED; + window.hidden = false; + } + if (window.isShown()) { + for (TWindow w: windows) { + if (w.isActive()) { + w.setActive(false); + w.onUnfocus(); + } + w.setZ(w.getZ() + 1); + } + } + windows.add(window); + if (window.isShown()) { + activeWindow = window; + activeWindow.setZ(0); + activeWindow.setActive(true); + activeWindow.onFocus(); + } + + if (((window.flags & TWindow.CENTERED) == 0) + && smartWindowPlacement) { + + doSmartPlacement(window); + } + } + + // Desktop cannot be active over any other window. + if (desktop != null) { + desktop.setActive(false); + } + } + + /** + * Check if there is a system-modal window on top. + * + * @return true if the active window is modal + */ + private boolean modalWindowActive() { + if (windows.size() == 0) { + return false; + } + + for (TWindow w: windows) { + if (w.isModal()) { + return true; + } + } + + return false; + } + + /** + * Close all open windows. + */ + private void closeAllWindows() { + // Don't do anything if we are in the menu + if (activeMenu != null) { + return; + } + while (windows.size() > 0) { + closeWindow(windows.get(0)); + } + } + + /** + * Re-layout the open windows as non-overlapping tiles. This produces + * almost the same results as Turbo Pascal 7.0's IDE. + */ + private void tileWindows() { + synchronized (windows) { + // Don't do anything if we are in the menu + if (activeMenu != null) { + return; + } + int z = windows.size(); + if (z == 0) { + return; + } + int a = 0; + int b = 0; + a = (int)(Math.sqrt(z)); + int c = 0; + while (c < a) { + b = (z - c) / a; + if (((a * b) + c) == z) { + break; + } + c++; + } + assert (a > 0); + assert (b > 0); + assert (c < a); + int newWidth = (getScreen().getWidth() / a); + int newHeight1 = ((getScreen().getHeight() - 1) / b); + int newHeight2 = ((getScreen().getHeight() - 1) / (b + c)); + + List sorted = new LinkedList(windows); + Collections.sort(sorted); + Collections.reverse(sorted); + for (int i = 0; i < sorted.size(); i++) { + int logicalX = i / b; + int logicalY = i % b; + if (i >= ((a - 1) * b)) { + logicalX = a - 1; + logicalY = i - ((a - 1) * b); + } + + TWindow w = sorted.get(i); + w.setX(logicalX * newWidth); + w.setWidth(newWidth); + if (i >= ((a - 1) * b)) { + w.setY((logicalY * newHeight2) + 1); + w.setHeight(newHeight2); + } else { + w.setY((logicalY * newHeight1) + 1); + w.setHeight(newHeight1); + } + } + } + } + + /** + * Re-layout the open windows as overlapping cascaded windows. + */ + private void cascadeWindows() { + synchronized (windows) { + // Don't do anything if we are in the menu + if (activeMenu != null) { + return; + } + int x = 0; + int y = 1; + List sorted = new LinkedList(windows); + Collections.sort(sorted); + Collections.reverse(sorted); + for (TWindow window: sorted) { + window.setX(x); + window.setY(y); + x++; + y++; + if (x > getScreen().getWidth()) { + x = 0; + } + if (y >= getScreen().getHeight()) { + y = 1; + } + } + } + } + + /** + * Place a window to minimize its overlap with other windows. + * + * @param window the window to place + */ + public final void doSmartPlacement(final TWindow window) { + // This is a pretty dumb algorithm, but seems to work. The hardest + // part is computing these "overlap" values seeking a minimum average + // overlap. + int xMin = 0; + int yMin = desktopTop; + int xMax = getScreen().getWidth() - window.getWidth() + 1; + int yMax = desktopBottom - window.getHeight() + 1; + if (xMax < xMin) { + xMax = xMin; + } + if (yMax < yMin) { + yMax = yMin; + } + + if ((xMin == xMax) && (yMin == yMax)) { + // No work to do, bail out. + return; + } + + // Compute the overlap matrix without the new window. + int width = getScreen().getWidth(); + int height = getScreen().getHeight(); + int overlapMatrix[][] = new int[width][height]; + for (TWindow w: windows) { + if (window == w) { + continue; + } + for (int x = w.getX(); x < w.getX() + w.getWidth(); x++) { + if (x >= width) { + continue; + } + for (int y = w.getY(); y < w.getY() + w.getHeight(); y++) { + if (y >= height) { + continue; + } + overlapMatrix[x][y]++; + } + } + } + + long oldOverlapTotal = 0; + long oldOverlapN = 0; + for (int x = 0; x < width; x++) { + for (int y = 0; y < height; y++) { + oldOverlapTotal += overlapMatrix[x][y]; + if (overlapMatrix[x][y] > 0) { + oldOverlapN++; + } + } + } + + + double oldOverlapAvg = (double) oldOverlapTotal / (double) oldOverlapN; + boolean first = true; + int windowX = window.getX(); + int windowY = window.getY(); + + // For each possible (x, y) position for the new window, compute a + // new overlap matrix. + for (int x = xMin; x < xMax; x++) { + for (int y = yMin; y < yMax; y++) { + + // Start with the matrix minus this window. + int newMatrix[][] = new int[width][height]; + for (int mx = 0; mx < width; mx++) { + for (int my = 0; my < height; my++) { + newMatrix[mx][my] = overlapMatrix[mx][my]; + } + } + + // Add this window's values to the new overlap matrix. + long newOverlapTotal = 0; + long newOverlapN = 0; + // Start by adding each new cell. + for (int wx = x; wx < x + window.getWidth(); wx++) { + if (wx >= width) { + continue; + } + for (int wy = y; wy < y + window.getHeight(); wy++) { + if (wy >= height) { + continue; + } + newMatrix[wx][wy]++; + } + } + // Now figure out the new value for total coverage. + for (int mx = 0; mx < width; mx++) { + for (int my = 0; my < height; my++) { + newOverlapTotal += newMatrix[x][y]; + if (newMatrix[mx][my] > 0) { + newOverlapN++; + } + } + } + double newOverlapAvg = (double) newOverlapTotal / (double) newOverlapN; + + if (first) { + // First time: just record what we got. + oldOverlapAvg = newOverlapAvg; + first = false; + } else { + // All other times: pick a new best (x, y) and save the + // overlap value. + if (newOverlapAvg < oldOverlapAvg) { + windowX = x; + windowY = y; + oldOverlapAvg = newOverlapAvg; + } + } + + } // for (int x = xMin; x < xMax; x++) + + } // for (int y = yMin; y < yMax; y++) + + // Finally, set the window's new coordinates. + window.setX(windowX); + window.setY(windowY); + } + + // ------------------------------------------------------------------------ + // TMenu management ------------------------------------------------------- + // ------------------------------------------------------------------------ + + /** + * Check if a mouse event would hit either the active menu or any open + * sub-menus. + * + * @param mouse mouse event + * @return true if the mouse would hit the active menu or an open + * sub-menu + */ + private boolean mouseOnMenu(final TMouseEvent mouse) { + assert (activeMenu != null); + List menus = new LinkedList(subMenus); + Collections.reverse(menus); + for (TMenu menu: menus) { + if (menu.mouseWouldHit(mouse)) { + return true; + } + } + return activeMenu.mouseWouldHit(mouse); + } + + /** + * See if we need to switch window or activate the menu based on + * a mouse click. + * + * @param mouse mouse event + */ + private void checkSwitchFocus(final TMouseEvent mouse) { + + if ((mouse.getType() == TMouseEvent.Type.MOUSE_DOWN) + && (activeMenu != null) + && (mouse.getAbsoluteY() != 0) + && (!mouseOnMenu(mouse)) + ) { + // They clicked outside the active menu, turn it off + activeMenu.setActive(false); + activeMenu = null; + for (TMenu menu: subMenus) { + menu.setActive(false); + } + subMenus.clear(); + // Continue checks + } + + // See if they hit the menu bar + if ((mouse.getType() == TMouseEvent.Type.MOUSE_DOWN) + && (mouse.isMouse1()) + && (!modalWindowActive()) + && (mouse.getAbsoluteY() == 0) + ) { + + for (TMenu menu: subMenus) { + menu.setActive(false); + } + subMenus.clear(); + + // They selected the menu, go activate it + for (TMenu menu: menus) { + if ((mouse.getAbsoluteX() >= menu.getX()) + && (mouse.getAbsoluteX() < menu.getX() + + menu.getTitle().length() + 2) + ) { + menu.setActive(true); + activeMenu = menu; + } else { + menu.setActive(false); + } + } + return; + } + + // See if they hit the menu bar + if ((mouse.getType() == TMouseEvent.Type.MOUSE_MOTION) + && (mouse.isMouse1()) + && (activeMenu != null) + && (mouse.getAbsoluteY() == 0) + ) { + + TMenu oldMenu = activeMenu; + for (TMenu menu: subMenus) { + menu.setActive(false); + } + subMenus.clear(); + + // See if we should switch menus + for (TMenu menu: menus) { + if ((mouse.getAbsoluteX() >= menu.getX()) + && (mouse.getAbsoluteX() < menu.getX() + + menu.getTitle().length() + 2) + ) { + menu.setActive(true); + activeMenu = menu; + } + } + if (oldMenu != activeMenu) { + // They switched menus + oldMenu.setActive(false); + } + return; + } + + // If a menu is still active, don't switch windows + if (activeMenu != null) { + return; + } + + // Only switch if there are multiple windows + if (windows.size() < 2) { + return; + } + + if (((focusFollowsMouse == true) + && (mouse.getType() == TMouseEvent.Type.MOUSE_MOTION)) + || (mouse.getType() == TMouseEvent.Type.MOUSE_UP) + ) { + synchronized (windows) { + Collections.sort(windows); + if (windows.get(0).isModal()) { + // Modal windows don't switch + return; + } + + for (TWindow window: windows) { + assert (!window.isModal()); + + if (window.isHidden()) { + assert (!window.isActive()); + continue; + } + + if (window.mouseWouldHit(mouse)) { + if (window == windows.get(0)) { + // Clicked on the same window, nothing to do + assert (window.isActive()); + return; + } + + // We will be switching to another window + assert (windows.get(0).isActive()); + assert (windows.get(0) == activeWindow); + assert (!window.isActive()); + activeWindow.onUnfocus(); + activeWindow.setActive(false); + activeWindow.setZ(window.getZ()); + activeWindow = window; + window.setZ(0); + window.setActive(true); + window.onFocus(); + return; + } + } + } + + // Clicked on the background, nothing to do + return; + } + + // Nothing to do: this isn't a mouse up, or focus isn't following + // mouse. + return; + } + + /** + * Turn off the menu. + */ + public final void closeMenu() { + if (activeMenu != null) { + activeMenu.setActive(false); + activeMenu = null; + for (TMenu menu: subMenus) { + menu.setActive(false); + } + subMenus.clear(); + } + } + + /** + * Get a (shallow) copy of the menu list. + * + * @return a copy of the menu list + */ + public final List getAllMenus() { + return new LinkedList(menus); + } + + /** + * Add a top-level menu to the list. + * + * @param menu the menu to add + * @throws IllegalArgumentException if the menu is already used in + * another TApplication + */ + public final void addMenu(final TMenu menu) { + if ((menu.getApplication() != null) + && (menu.getApplication() != this) + ) { + throw new IllegalArgumentException("Menu " + menu + " is already " + + "part of application " + menu.getApplication()); + } + closeMenu(); + menus.add(menu); + recomputeMenuX(); + } + + /** + * Remove a top-level menu from the list. + * + * @param menu the menu to remove + * @throws IllegalArgumentException if the menu is already used in + * another TApplication + */ + public final void removeMenu(final TMenu menu) { + if ((menu.getApplication() != null) + && (menu.getApplication() != this) + ) { + throw new IllegalArgumentException("Menu " + menu + " is already " + + "part of application " + menu.getApplication()); + } + closeMenu(); + menus.remove(menu); + recomputeMenuX(); + } + + /** + * Turn off a sub-menu. + */ + public final void closeSubMenu() { + assert (activeMenu != null); + TMenu item = subMenus.get(subMenus.size() - 1); + assert (item != null); + item.setActive(false); + subMenus.remove(subMenus.size() - 1); + } + + /** + * Switch to the next menu. + * + * @param forward if true, then switch to the next menu in the list, + * otherwise switch to the previous menu in the list + */ + public final void switchMenu(final boolean forward) { + assert (activeMenu != null); + + for (TMenu menu: subMenus) { + menu.setActive(false); + } + subMenus.clear(); + + for (int i = 0; i < menus.size(); i++) { + if (activeMenu == menus.get(i)) { + if (forward) { + if (i < menus.size() - 1) { + i++; + } + } else { + if (i > 0) { + i--; + } + } + activeMenu.setActive(false); + activeMenu = menus.get(i); + activeMenu.setActive(true); + return; + } + } + } + + /** + * Add a menu item to the global list. If it has a keyboard accelerator, + * that will be added the global hash. + * + * @param item the menu item + */ + public final void addMenuItem(final TMenuItem item) { + menuItems.add(item); + + TKeypress key = item.getKey(); + if (key != null) { + synchronized (accelerators) { + assert (accelerators.get(key) == null); + accelerators.put(key.toLowerCase(), item); + } + } + } + + /** + * Disable one menu item. + * + * @param id the menu item ID + */ + public final void disableMenuItem(final int id) { + for (TMenuItem item: menuItems) { + if (item.getId() == id) { + item.setEnabled(false); + } + } + } + + /** + * Disable the range of menu items with ID's between lower and upper, + * inclusive. + * + * @param lower the lowest menu item ID + * @param upper the highest menu item ID + */ + public final void disableMenuItems(final int lower, final int upper) { + for (TMenuItem item: menuItems) { + if ((item.getId() >= lower) && (item.getId() <= upper)) { + item.setEnabled(false); + } + } + } + + /** + * Enable one menu item. + * + * @param id the menu item ID + */ + public final void enableMenuItem(final int id) { + for (TMenuItem item: menuItems) { + if (item.getId() == id) { + item.setEnabled(true); + } + } + } + + /** + * Enable the range of menu items with ID's between lower and upper, + * inclusive. + * + * @param lower the lowest menu item ID + * @param upper the highest menu item ID + */ + public final void enableMenuItems(final int lower, final int upper) { + for (TMenuItem item: menuItems) { + if ((item.getId() >= lower) && (item.getId() <= upper)) { + item.setEnabled(true); + } + } + } + + /** + * Recompute menu x positions based on their title length. + */ + public final void recomputeMenuX() { + int x = 0; + for (TMenu menu: menus) { + menu.setX(x); + x += menu.getTitle().length() + 2; + } + } + + /** + * Post an event to process and turn off the menu. + * + * @param event new event to add to the queue + */ + public final void postMenuEvent(final TInputEvent event) { + synchronized (fillEventQueue) { + fillEventQueue.add(event); + } + closeMenu(); + } + + /** + * Add a sub-menu to the list of open sub-menus. + * + * @param menu sub-menu + */ + public final void addSubMenu(final TMenu menu) { + subMenus.add(menu); + } + + /** + * Convenience function to add a top-level menu. + * + * @param title menu title + * @return the new menu + */ + public final TMenu addMenu(final String title) { + int x = 0; + int y = 0; + TMenu menu = new TMenu(this, x, y, title); + menus.add(menu); + recomputeMenuX(); + return menu; + } + + /** + * Convenience function to add a default "File" menu. + * + * @return the new menu + */ + public final TMenu addFileMenu() { + TMenu fileMenu = addMenu("&File"); + fileMenu.addDefaultItem(TMenu.MID_OPEN_FILE); + fileMenu.addSeparator(); + fileMenu.addDefaultItem(TMenu.MID_SHELL); + fileMenu.addDefaultItem(TMenu.MID_EXIT); + TStatusBar statusBar = fileMenu.newStatusBar("File-management " + + "commands (Open, Save, Print, etc.)"); + statusBar.addShortcutKeypress(kbF1, cmHelp, "Help"); + return fileMenu; + } + + /** + * Convenience function to add a default "Edit" menu. + * + * @return the new menu + */ + public final TMenu addEditMenu() { + TMenu editMenu = addMenu("&Edit"); + editMenu.addDefaultItem(TMenu.MID_CUT); + editMenu.addDefaultItem(TMenu.MID_COPY); + editMenu.addDefaultItem(TMenu.MID_PASTE); + editMenu.addDefaultItem(TMenu.MID_CLEAR); + TStatusBar statusBar = editMenu.newStatusBar("Editor operations, " + + "undo, and Clipboard access"); + statusBar.addShortcutKeypress(kbF1, cmHelp, "Help"); + return editMenu; + } + + /** + * Convenience function to add a default "Window" menu. + * + * @return the new menu + */ + public final TMenu addWindowMenu() { + TMenu windowMenu = addMenu("&Window"); + windowMenu.addDefaultItem(TMenu.MID_TILE); + windowMenu.addDefaultItem(TMenu.MID_CASCADE); + windowMenu.addDefaultItem(TMenu.MID_CLOSE_ALL); + windowMenu.addSeparator(); + windowMenu.addDefaultItem(TMenu.MID_WINDOW_MOVE); + windowMenu.addDefaultItem(TMenu.MID_WINDOW_ZOOM); + windowMenu.addDefaultItem(TMenu.MID_WINDOW_NEXT); + windowMenu.addDefaultItem(TMenu.MID_WINDOW_PREVIOUS); + windowMenu.addDefaultItem(TMenu.MID_WINDOW_CLOSE); + TStatusBar statusBar = windowMenu.newStatusBar("Open, arrange, and " + + "list windows"); + statusBar.addShortcutKeypress(kbF1, cmHelp, "Help"); + return windowMenu; + } + + /** + * Convenience function to add a default "Help" menu. + * + * @return the new menu + */ + public final TMenu addHelpMenu() { + TMenu helpMenu = addMenu("&Help"); + helpMenu.addDefaultItem(TMenu.MID_HELP_CONTENTS); + helpMenu.addDefaultItem(TMenu.MID_HELP_INDEX); + helpMenu.addDefaultItem(TMenu.MID_HELP_SEARCH); + helpMenu.addDefaultItem(TMenu.MID_HELP_PREVIOUS); + helpMenu.addDefaultItem(TMenu.MID_HELP_HELP); + helpMenu.addDefaultItem(TMenu.MID_HELP_ACTIVE_FILE); + helpMenu.addSeparator(); + helpMenu.addDefaultItem(TMenu.MID_ABOUT); + TStatusBar statusBar = helpMenu.newStatusBar("Access online help"); + statusBar.addShortcutKeypress(kbF1, cmHelp, "Help"); + return helpMenu; + } + + // ------------------------------------------------------------------------ + // Event handlers --------------------------------------------------------- + // ------------------------------------------------------------------------ + + /** + * Method that TApplication subclasses can override to handle menu or + * posted command events. + * + * @param command command event + * @return if true, this event was consumed + */ + protected boolean onCommand(final TCommandEvent command) { + // Default: handle cmExit + if (command.equals(cmExit)) { + if (messageBox("Confirmation", "Exit application?", + TMessageBox.Type.YESNO).getResult() == TMessageBox.Result.YES) { + quit = true; + } + return true; + } + + if (command.equals(cmShell)) { + openTerminal(0, 0, TWindow.RESIZABLE); + return true; + } + + if (command.equals(cmTile)) { + tileWindows(); + return true; + } + if (command.equals(cmCascade)) { + cascadeWindows(); + return true; + } + if (command.equals(cmCloseAll)) { + closeAllWindows(); + return true; + } + + return false; + } + + /** + * Method that TApplication subclasses can override to handle menu + * events. + * + * @param menu menu event + * @return if true, this event was consumed + */ + protected boolean onMenu(final TMenuEvent menu) { + + // Default: handle MID_EXIT + if (menu.getId() == TMenu.MID_EXIT) { + if (messageBox("Confirmation", "Exit application?", + TMessageBox.Type.YESNO).getResult() == TMessageBox.Result.YES) { + quit = true; + } + return true; + } + + if (menu.getId() == TMenu.MID_SHELL) { + openTerminal(0, 0, TWindow.RESIZABLE); + return true; + } + + if (menu.getId() == TMenu.MID_TILE) { + tileWindows(); + return true; + } + if (menu.getId() == TMenu.MID_CASCADE) { + cascadeWindows(); + return true; + } + if (menu.getId() == TMenu.MID_CLOSE_ALL) { + closeAllWindows(); + return true; + } + if (menu.getId() == TMenu.MID_ABOUT) { + showAboutDialog(); + return true; + } + return false; + } + + /** + * Method that TApplication subclasses can override to handle keystrokes. + * + * @param keypress keystroke event + * @return if true, this event was consumed + */ + protected boolean onKeypress(final TKeypressEvent keypress) { + // Default: only menu shortcuts + + // Process Alt-F, Alt-E, etc. menu shortcut keys + if (!keypress.getKey().isFnKey() + && keypress.getKey().isAlt() + && !keypress.getKey().isCtrl() + && (activeMenu == null) + && !modalWindowActive() + ) { + + assert (subMenus.size() == 0); + + for (TMenu menu: menus) { + if (Character.toLowerCase(menu.getMnemonic().getShortcut()) + == Character.toLowerCase(keypress.getKey().getChar()) + ) { + activeMenu = menu; + menu.setActive(true); + return true; + } + } + } + + return false; + } + + // ------------------------------------------------------------------------ + // TTimer management ------------------------------------------------------ + // ------------------------------------------------------------------------ + + /** + * Get the amount of time I can sleep before missing a Timer tick. + * + * @param timeout = initial (maximum) timeout in millis + * @return number of milliseconds between now and the next timer event + */ + private long getSleepTime(final long timeout) { + Date now = new Date(); + long nowTime = now.getTime(); + long sleepTime = timeout; + for (TTimer timer: timers) { + long nextTickTime = timer.getNextTick().getTime(); + if (nextTickTime < nowTime) { + return 0; + } + + long timeDifference = nextTickTime - nowTime; + if (timeDifference < sleepTime) { + sleepTime = timeDifference; + } + } + assert (sleepTime >= 0); + assert (sleepTime <= timeout); + return sleepTime; + } + + /** + * Convenience function to add a timer. + * + * @param duration number of milliseconds to wait between ticks + * @param recurring if true, re-schedule this timer after every tick + * @param action function to call when button is pressed + * @return the timer + */ + public final TTimer addTimer(final long duration, final boolean recurring, + final TAction action) { + + TTimer timer = new TTimer(duration, recurring, action); + synchronized (timers) { + timers.add(timer); + } + return timer; + } + + /** + * Convenience function to remove a timer. + * + * @param timer timer to remove + */ + public final void removeTimer(final TTimer timer) { + synchronized (timers) { + timers.remove(timer); + } + } + + // ------------------------------------------------------------------------ + // Other TWindow constructors --------------------------------------------- + // ------------------------------------------------------------------------ + + /** + * Convenience function to spawn a message box. + * + * @param title window title, will be centered along the top border + * @param caption message to display. Use embedded newlines to get a + * multi-line box. + * @return the new message box + */ + public final TMessageBox messageBox(final String title, + final String caption) { + + return new TMessageBox(this, title, caption, TMessageBox.Type.OK); + } + + /** + * Convenience function to spawn a message box. + * + * @param title window title, will be centered along the top border + * @param caption message to display. Use embedded newlines to get a + * multi-line box. + * @param type one of the TMessageBox.Type constants. Default is + * Type.OK. + * @return the new message box + */ + public final TMessageBox messageBox(final String title, + final String caption, final TMessageBox.Type type) { + + return new TMessageBox(this, title, caption, type); + } + + /** + * Convenience function to spawn an input box. + * + * @param title window title, will be centered along the top border + * @param caption message to display. Use embedded newlines to get a + * multi-line box. + * @return the new input box + */ + public final TInputBox inputBox(final String title, final String caption) { + + return new TInputBox(this, title, caption); + } + + /** + * Convenience function to spawn an input box. + * + * @param title window title, will be centered along the top border + * @param caption message to display. Use embedded newlines to get a + * multi-line box. + * @param text initial text to seed the field with + * @return the new input box + */ + public final TInputBox inputBox(final String title, final String caption, + final String text) { + + return new TInputBox(this, title, caption, text); + } + + /** + * Convenience function to open a terminal window. + * + * @param x column relative to parent + * @param y row relative to parent + * @return the terminal new window + */ + public final TTerminalWindow openTerminal(final int x, final int y) { + return openTerminal(x, y, TWindow.RESIZABLE); + } + + /** + * Convenience function to open a terminal window. + * + * @param x column relative to parent + * @param y row relative to parent + * @param flags mask of CENTERED, MODAL, or RESIZABLE + * @return the terminal new window + */ + public final TTerminalWindow openTerminal(final int x, final int y, + final int flags) { + + return new TTerminalWindow(this, x, y, flags); + } + + /** + * Convenience function to spawn an file open box. + * + * @param path path of selected file + * @return the result of the new file open box + * @throws IOException if java.io operation throws + */ + public final String fileOpenBox(final String path) throws IOException { + + TFileOpenBox box = new TFileOpenBox(this, path, TFileOpenBox.Type.OPEN); + return box.getFilename(); + } + + /** + * Convenience function to spawn an file open box. + * + * @param path path of selected file + * @param type one of the Type constants + * @return the result of the new file open box + * @throws IOException if java.io operation throws + */ + public final String fileOpenBox(final String path, + final TFileOpenBox.Type type) throws IOException { + + TFileOpenBox box = new TFileOpenBox(this, path, type); + return box.getFilename(); + } + + /** + * Convenience function to create a new window and make it active. + * Window will be located at (0, 0). + * + * @param title window title, will be centered along the top border + * @param width width of window + * @param height height of window + */ + public final TWindow addWindow(final String title, final int width, + final int height) { + + TWindow window = new TWindow(this, title, 0, 0, width, height); + return window; + } + /** + * Convenience function to create a new window and make it active. + * Window will be located at (0, 0). + * + * @param title window title, will be centered along the top border + * @param width width of window + * @param height height of window + * @param flags bitmask of RESIZABLE, CENTERED, or MODAL + */ + public final TWindow addWindow(final String title, + final int width, final int height, final int flags) { + + TWindow window = new TWindow(this, title, 0, 0, width, height, flags); + return window; + } + + /** + * Convenience function to create a new window and make it active. + * + * @param title window title, will be centered along the top border + * @param x column relative to parent + * @param y row relative to parent + * @param width width of window + * @param height height of window + */ + public final TWindow addWindow(final String title, + final int x, final int y, final int width, final int height) { + + TWindow window = new TWindow(this, title, x, y, width, height); + return window; + } + + /** + * Convenience function to create a new window and make it active. + * + * @param title window title, will be centered along the top border + * @param x column relative to parent + * @param y row relative to parent + * @param width width of window + * @param height height of window + * @param flags mask of RESIZABLE, CENTERED, or MODAL + */ + public final TWindow addWindow(final String title, + final int x, final int y, final int width, final int height, + final int flags) { + + TWindow window = new TWindow(this, title, x, y, width, height, flags); + return window; } }