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.ECMA48Backend;
import jexer.io.Screen;
+import jexer.menu.TMenu;
+import jexer.menu.TMenuItem;
import static jexer.TCommand.*;
import static jexer.TKeypress.*;
private int mouseY;
/**
- * Event queue that will be drained by either primary or secondary Fiber.
+ * Event queue that is filled by run().
*/
- private List<TInputEvent> eventQueue;
+ private List<TInputEvent> fillEventQueue;
+
+ /**
+ * Event queue that will be drained by either primary or secondary
+ * Thread.
+ */
+ private List<TInputEvent> drainEventQueue;
+
+ /**
+ * Top-level menus in this application.
+ */
+ private List<TMenu> menus;
+
+ /**
+ * Stack of activated sub-menus in this application.
+ */
+ private List<TMenu> subMenus;
+
+ /**
+ * The currently acive menu.
+ */
+ private TMenu activeMenu = null;
/**
* Windows and widgets pull colors from this ColorTheme.
/**
* The top-level windows (but not menus).
*/
- List<TWindow> windows;
+ private List<TWindow> windows;
/**
* When true, exit the application.
/**
* Request full repaint on next screen refresh.
*/
- public void setRepaint() {
+ public final void setRepaint() {
repaint = true;
}
public TApplication(final InputStream input,
final OutputStream output) throws UnsupportedEncodingException {
- backend = new ECMA48Backend(input, output);
- theme = new ColorTheme();
- desktopBottom = getScreen().getHeight() - 1;
- eventQueue = new LinkedList<TInputEvent>();
- windows = new LinkedList<TWindow>();
+ backend = new ECMA48Backend(input, output);
+ theme = new ColorTheme();
+ desktopBottom = getScreen().getHeight() - 1;
+ fillEventQueue = new LinkedList<TInputEvent>();
+ drainEventQueue = new LinkedList<TInputEvent>();
+ windows = new LinkedList<TWindow>();
+ menus = new LinkedList<TMenu>();
+ subMenus = new LinkedList<TMenu>();
}
/**
window.drawChildren();
}
- /*
// Draw the blank menubar line - reset the screen clipping first so
// it won't trim it out.
getScreen().resetClipping();
theme.getColor("tmenu"));
// Now draw the menus.
int x = 1;
- for (TMenu m: menus) {
+ for (TMenu menu: menus) {
CellAttributes menuColor;
CellAttributes menuMnemonicColor;
- if (menu.active) {
+ if (menu.getActive()) {
menuColor = theme.getColor("tmenu.highlighted");
menuMnemonicColor = theme.getColor("tmenu.mnemonic.highlighted");
} else {
menuMnemonicColor = theme.getColor("tmenu.mnemonic");
}
// Draw the menu title
- getScreen().hLineXY(x, 0, menu.title.length() + 2, ' ',
+ getScreen().hLineXY(x, 0, menu.getTitle().length() + 2, ' ',
menuColor);
- getScreen().putStrXY(x + 1, 0, menu.title, menuColor);
+ getScreen().putStrXY(x + 1, 0, menu.getTitle(), menuColor);
// Draw the highlight character
- getScreen().putCharXY(x + 1 + m.mnemonic.shortcutIdx, 0,
- m.mnemonic.shortcut, menuMnemonicColor);
+ getScreen().putCharXY(x + 1 + menu.getMnemonic().getShortcutIdx(),
+ 0, menu.getMnemonic().getShortcut(), menuMnemonicColor);
- if (menu.active) {
+ if (menu.getActive()) {
menu.drawChildren();
// Reset the screen clipping so we can draw the next title.
getScreen().resetClipping();
}
- x += menu.title.length + 2;
+ x += menu.getTitle().length() + 2;
}
for (TMenu menu: subMenus) {
getScreen().resetClipping();
menu.drawChildren();
}
- */
// Draw the mouse pointer
drawMouse();
}
// Kill the cursor
- if (cursor == false) {
+ if (!cursor) {
getScreen().hideCursor();
}
* Run this application until it exits.
*/
public final void run() {
- List<TInputEvent> events = new LinkedList<TInputEvent>();
-
while (!quit) {
// Timeout is in milliseconds, so default timeout after 1 second
// of inactivity.
int timeout = getSleepTime(1000);
- if (eventQueue.size() > 0) {
- // Do not wait if there are definitely events waiting to be
- // processed or a screen redraw to do.
- timeout = 0;
+ // See if there are any definitely events waiting to be processed
+ // or a screen redraw to do. If so, do not wait if there is no
+ // I/O coming in.
+ synchronized (drainEventQueue) {
+ if (drainEventQueue.size() > 0) {
+ timeout = 0;
+ }
+ }
+ synchronized (fillEventQueue) {
+ if (fillEventQueue.size() > 0) {
+ timeout = 0;
+ }
}
- // Pull any pending input events
- backend.getEvents(events, timeout);
- metaHandleEvents(events);
- events.clear();
+ // Pull any pending I/O events
+ backend.getEvents(fillEventQueue, timeout);
+
+ // Dispatch each event to the appropriate handler, one at a time.
+ for (;;) {
+ TInputEvent event = null;
+ synchronized (fillEventQueue) {
+ if (fillEventQueue.size() == 0) {
+ break;
+ }
+ event = fillEventQueue.remove(0);
+ }
+ metaHandleEvent(event);
+ }
// Process timers and call doIdle()'s
doIdle();
/**
* Peek at certain application-level events, add to eventQueue, and wake
- * up the consuming Fiber.
+ * up the consuming Thread.
*
- * @param events the input events to consume
+ * @param event the input event to consume
*/
- private void metaHandleEvents(final List<TInputEvent> events) {
+ private void metaHandleEvent(final TInputEvent event) {
- for (TInputEvent event: events) {
+ /*
+ System.err.printf(String.format("metaHandleEvents event: %s\n",
+ event)); System.err.flush();
+ */
- /*
- 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;
+ }
- if (quit) {
- // Do no more processing if the application is already trying
- // to exit.
+ // DEBUG
+ if (event instanceof TKeypressEvent) {
+ TKeypressEvent keypress = (TKeypressEvent) event;
+ if (keypress.equals(kbAltX)) {
+ quit = true;
return;
}
+ }
+ // DEBUG
- // DEBUG
- if (event instanceof TKeypressEvent) {
- TKeypressEvent keypress = (TKeypressEvent) event;
- if (keypress.equals(kbAltX)) {
- quit = true;
- return;
- }
- }
- // DEBUG
-
- // Special application-wide events -------------------------------
+ // Special application-wide events -------------------------------
- // Abort everything
- if (event instanceof TCommandEvent) {
- TCommandEvent command = (TCommandEvent) event;
- if (command.getCmd().equals(cmAbort)) {
- quit = true;
- return;
- }
+ // 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;
- getScreen().setDimensions(resize.getWidth(),
- resize.getHeight());
- desktopBottom = getScreen().getHeight() - 1;
- repaint = true;
- mouseX = 0;
- mouseY = 0;
- continue;
- }
+ // Screen resize
+ if (event instanceof TResizeEvent) {
+ TResizeEvent resize = (TResizeEvent) event;
+ getScreen().setDimensions(resize.getWidth(),
+ resize.getHeight());
+ desktopBottom = getScreen().getHeight() - 1;
+ repaint = true;
+ mouseX = 0;
+ mouseY = 0;
+ return;
+ }
- // Peek at the mouse position
- if (event instanceof TMouseEvent) {
- TMouseEvent mouse = (TMouseEvent) event;
- if ((mouseX != mouse.getX()) || (mouseY != mouse.getY())) {
- mouseX = mouse.getX();
- mouseY = mouse.getY();
- drawMouse();
- }
+ // Peek at the mouse position
+ if (event instanceof TMouseEvent) {
+ TMouseEvent mouse = (TMouseEvent) event;
+ if ((mouseX != mouse.getX()) || (mouseY != mouse.getY())) {
+ mouseX = mouse.getX();
+ mouseY = mouse.getY();
+ drawMouse();
}
+ }
- // TODO: change to two separate threads
- handleEvent(event);
-
- /*
+ // TODO: change to two separate threads
+ primaryHandleEvent(event);
- // 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);
+ // Put into the main queue
+ addEvent(event);
- // Wake up the secondary handler for these events
- secondaryEventFiber.call();
- } else {
- assert(primaryEventFiber.state == Fiber.State.HOLD);
+ // 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 primary handler for these events
- primaryEventFiber.call();
- }
- */
+ // Wake up the secondary handler for these events
+ secondaryEventFiber.call();
+ } else {
+ assert(primaryEventFiber.state == Fiber.State.HOLD);
- } // for (TInputEvent event: events)
+ // Wake up the primary handler for these events
+ primaryEventFiber.call();
+ }
+ */
}
/**
* Dispatch one event to the appropriate widget or application-level
- * event handler.
+ * 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 final void handleEvent(TInputEvent event) {
+ private void primaryHandleEvent(final TInputEvent event) {
+
+ // System.err.printf("Handle event: %s\n", event);
+
+ // Special application-wide events -----------------------------------
+
+ // Peek at the mouse position
+ if (event instanceof TMouseEvent) {
+ // 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.getMouse1())
+ && (!mouse.getMouse2())
+ && (!mouse.getMouse3())
+ && (!mouse.getMouseWheelUp())
+ && (!mouse.getMouseWheelDown())
+ ) {
+ 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;
+ }
/*
- // std.stdio.stderr.writefln("Handle event: %s", event);
-
- // Special application-wide events -----------------------------------
-
- // Peek at the mouse position
- if (auto mouse = cast(TMouseEvent)event) {
- // See if we need to switch focus to another window or the menu
- checkSwitchFocus(mouse);
- }
-
- // Handle menu events
- if ((activeMenu !is null) && (!cast(TCommandEvent)event)) {
- TMenu menu = activeMenu;
- if (auto mouse = cast(TMouseEvent)event) {
-
- while (subMenus.length > 0) {
- TMenu subMenu = subMenus[$ - 1];
- if (subMenu.mouseWouldHit(mouse)) {
- break;
- }
- if ((mouse.type == TMouseEvent.Type.MOUSE_MOTION) &&
- (!mouse.mouse1) &&
- (!mouse.mouse2) &&
- (!mouse.mouse3) &&
- (!mouse.mouseWheelUp) &&
- (!mouse.mouseWheelDown)
- ) {
- break;
- }
- // We navigated away from a sub-menu, so close it
- closeSubMenu();
- }
-
- // Convert the mouse relative x/y to menu coordinates
- assert(mouse.x == mouse.absoluteX);
- assert(mouse.y == mouse.absoluteY);
- if (subMenus.length > 0) {
- menu = subMenus[$ - 1];
- }
- mouse.x -= menu.x;
- mouse.y -= menu.y;
- }
- menu.handleEvent(event);
- return;
- }
-
- if (auto keypress = cast(TKeypressEvent)event) {
- // See if this key matches an accelerator, and if so dispatch the
- // menu event.
- TKeypress keypressLowercase = toLower(keypress.key);
- TMenuItem *item = (keypressLowercase in accelerators);
- if (item !is null) {
- // Let the menu item dispatch
- item.dispatch();
- return;
- } else {
- // Handle the keypress
- if (onKeypress(keypress)) {
- return;
- }
- }
- }
-
- if (auto cmd = cast(TCommandEvent)event) {
- if (onCommand(cmd)) {
- return;
- }
- }
-
- if (auto menu = cast(TMenuEvent)event) {
- if (onMenu(menu)) {
- return;
- }
- }
+ TODO
+
+ if (event instanceof TKeypressEvent) {
+ TKeypressEvent keypress = (TKeypressEvent) event;
+ // See if this key matches an accelerator, and if so dispatch the
+ // menu event.
+ TKeypress keypressLowercase = keypress.getKey().toLowerCase();
+ TMenuItem item = accelerators.get(keypressLowercase);
+ if (item != null) {
+ // Let the menu item dispatch
+ item.dispatch();
+ return;
+ } else {
+ // Handle the keypress
+ if (onKeypress(keypress)) {
+ return;
+ }
+ }
+ }
*/
- // Dispatch events to the active window -------------------------------
- for (TWindow window: windows) {
- if (window.active) {
+ if (event instanceof TCommandEvent) {
+ if (onCommand((TCommandEvent) event)) {
+ return;
+ }
+ }
+
+ if (event instanceof TMenuEvent) {
+ if (onMenu((TMenuEvent) event)) {
+ return;
+ }
+ }
+
+ // Dispatch events to the active window -------------------------------
+ for (TWindow window: windows) {
+ if (window.getActive()) {
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.x);
- mouse.setY(mouse.getY() - window.y);
- }
- // System.err("TApplication dispatch event: %s\n", event);
- window.handleEvent(event);
- break;
- }
- }
+ // 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());
+ }
+ // System.err("TApplication dispatch event: %s\n", event);
+ window.handleEvent(event);
+ break;
+ }
+ }
+ }
+ /**
+ * 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) {
+ // TODO
}
/**
* @param window the window to remove
*/
public final void closeWindow(final TWindow window) {
- /*
- TODO
-
- uint z = window.z;
- window.z = -1;
- windows.sort;
- windows = windows[1 .. $];
+ int z = window.getZ();
+ window.setZ(-1);
+ Collections.sort(windows);
+ windows.remove(0);
TWindow activeWindow = null;
- foreach (w; windows) {
- if (w.z > z) {
- w.z--;
- if (w.z == 0) {
- w.active = true;
- assert(activeWindow is null);
+ for (TWindow w: windows) {
+ if (w.getZ() > z) {
+ w.setZ(w.getZ() - 1);
+ if (w.getZ() == 0) {
+ w.setActive(true);
+ assert (activeWindow == null);
activeWindow = w;
} else {
- w.active = false;
+ w.setActive(false);
}
}
}
// Refresh screen
repaint = true;
+ /*
+ TODO
+
+
// Check if we are closing a TMessageBox or similar
if (secondaryEventReceiver !is null) {
assert(secondaryEventFiber !is null);
* otherwise switch to the previous window in the list
*/
public final void switchWindow(final boolean forward) {
- /*
- TODO
-
// Only switch if there are multiple windows
- if (windows.length < 2) {
+ if (windows.size() < 2) {
return;
}
- // Swap z/active between active window and the next in the
- // list
- ptrdiff_t activeWindowI = -1;
- for (auto i = 0; i < windows.length; i++) {
- if (windows[i].active) {
+ // 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).getActive()) {
activeWindowI = i;
break;
}
}
- assert(activeWindowI >= 0);
+ assert (activeWindowI >= 0);
// Do not switch if a window is modal
- if (windows[activeWindowI].isModal()) {
+ if (windows.get(activeWindowI).isModal()) {
return;
}
- size_t nextWindowI;
+ int nextWindowI;
if (forward) {
- nextWindowI = (activeWindowI + 1) % windows.length;
+ nextWindowI = (activeWindowI + 1) % windows.size();
} else {
if (activeWindowI == 0) {
- nextWindowI = windows.length - 1;
+ nextWindowI = windows.size() - 1;
} else {
nextWindowI = activeWindowI - 1;
}
}
- windows[activeWindowI].active = false;
- windows[activeWindowI].z = windows[nextWindowI].z;
- windows[nextWindowI].z = 0;
- windows[nextWindowI].active = true;
+ windows.get(activeWindowI).setActive(false);
+ windows.get(activeWindowI).setZ(windows.get(nextWindowI).getZ());
+ windows.get(nextWindowI).setZ(0);
+ windows.get(nextWindowI).setActive(true);
// Refresh
repaint = true;
- */
}
/**
assert (window.isModal());
}
for (TWindow w: windows) {
- w.active = false;
+ w.setActive(false);
w.setZ(w.getZ() + 1);
}
windows.add(window);
- window.active = true;
+ window.setActive(true);
window.setZ(0);
}
+ /**
+ * 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;
+ }
+ return windows.get(windows.size() - 1).isModal();
+ }
+
+ /**
+ * 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<TMenu> menus = new LinkedList<TMenu>(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.getMouse1())
+ && (!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);
+ }
+ }
+ repaint = true;
+ return;
+ }
+
+ // See if they hit the menu bar
+ if ((mouse.getType() == TMouseEvent.Type.MOUSE_MOTION)
+ && (mouse.getMouse1())
+ && (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);
+ }
+ repaint = true;
+ return;
+ }
+
+ // Only switch if there are multiple windows
+ if (windows.size() < 2) {
+ return;
+ }
+
+ // Switch on the upclick
+ if (mouse.getType() != TMouseEvent.Type.MOUSE_UP) {
+ return;
+ }
+
+ Collections.sort(windows);
+ if (windows.get(0).isModal()) {
+ // Modal windows don't switch
+ return;
+ }
+
+ for (TWindow window: windows) {
+ assert (!window.isModal());
+ if (window.mouseWouldHit(mouse)) {
+ if (window == windows.get(0)) {
+ // Clicked on the same window, nothing to do
+ return;
+ }
+
+ // We will be switching to another window
+ assert (windows.get(0).getActive());
+ assert (!window.getActive());
+ windows.get(0).setActive(false);
+ windows.get(0).setZ(window.getZ());
+ window.setZ(0);
+ window.setActive(true);
+ repaint = true;
+ return;
+ }
+ }
+
+ // Clicked on the background, nothing to do
+ 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();
+ }
+ repaint = true;
+ }
+
+ /**
+ * 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);
+ repaint = true;
+ }
+
+ /**
+ * 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);
+ repaint = true;
+ return;
+ }
+ }
+ }
+
+ /**
+ * 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) {
+ /*
+ TODO
+ // Default: handle cmExit
+ if (command.equals(cmExit)) {
+ if (messageBox("Confirmation", "Exit application?",
+ TMessageBox.Type.YESNO).result == TMessageBox.Result.YES) {
+ quit = true;
+ }
+ repaint = true;
+ return true;
+ }
+
+ if (command.equals(cmShell)) {
+ openTerminal(0, 0, TWindow.Flag.RESIZABLE);
+ repaint = true;
+ return true;
+ }
+
+ if (command.equals(cmTile)) {
+ tileWindows();
+ repaint = true;
+ return true;
+ }
+ if (command.equals(cmCascade)) {
+ cascadeWindows();
+ repaint = true;
+ return true;
+ }
+ if (command.equals(cmCloseAll)) {
+ closeAllWindows();
+ repaint = true;
+ 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) {
+ /*
+ TODO
+ if (messageBox("Confirmation", "Exit application?",
+ TMessageBox.Type.YESNO).result == TMessageBox.Result.YES) {
+ quit = true;
+ }
+ // System.err.printf("onMenu MID_EXIT result: quit = %s\n", quit);
+ repaint = true;
+ return true;
+ */
+ quit = true;
+ repaint = true;
+ return true;
+ }
+
+ /*
+ TODO
+ if (menu.id == TMenu.MID_SHELL) {
+ openTerminal(0, 0, TWindow.Flag.RESIZABLE);
+ repaint = true;
+ return true;
+ }
+ */
+
+ if (menu.getId() == TMenu.MID_TILE) {
+ tileWindows();
+ repaint = true;
+ return true;
+ }
+ if (menu.getId() == TMenu.MID_CASCADE) {
+ cascadeWindows();
+ repaint = true;
+ return true;
+ }
+ if (menu.getId() == TMenu.MID_CLOSE_ALL) {
+ closeAllWindows();
+ repaint = true;
+ 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().getIsKey()
+ && keypress.getKey().getAlt()
+ && !keypress.getKey().getCtrl()
+ && (activeMenu == null)
+ ) {
+
+ assert (subMenus.size() == 0);
+
+ for (TMenu menu: menus) {
+ if (Character.toLowerCase(menu.getMnemonic().getShortcut())
+ == Character.toLowerCase(keypress.getKey().getCh())
+ ) {
+ activeMenu = menu;
+ menu.setActive(true);
+ repaint = true;
+ return true;
+ }
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * Add a keyboard accelerator to the global hash.
+ *
+ * @param item menu item this accelerator relates to
+ * @param keypress keypress that will dispatch a TMenuEvent
+ */
+ public final void addAccelerator(final TMenuItem item,
+ final TKeypress keypress) {
+ /*
+ TODO
+ assert((keypress in accelerators) is null);
+ accelerators[keypress] = item;
+ */
+ }
+
+ /**
+ * 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 addMenuEvent(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(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);
+ 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);
+ return editMenu;
+ }
+
+ /**
+ * Convenience function to add a default "Window" menu.
+ *
+ * @return the new menu
+ */
+ final public 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);
+ return windowMenu;
+ }
+
+ /**
+ * Close all open windows.
+ */
+ private void closeAllWindows() {
+ // Don't do anything if we are in the menu
+ if (activeMenu != null) {
+ return;
+ }
+ for (TWindow window: windows) {
+ closeWindow(window);
+ }
+ }
+
+ /**
+ * 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() {
+ // 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));
+ // System.err.printf("Z %s a %s b %s c %s newWidth %s newHeight1 %s newHeight2 %s",
+ // z, a, b, c, newWidth, newHeight1, newHeight2);
+
+ List<TWindow> sorted = new LinkedList<TWindow>(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() {
+ // Don't do anything if we are in the menu
+ if (activeMenu != null) {
+ return;
+ }
+ int x = 0;
+ int y = 1;
+ List<TWindow> sorted = new LinkedList<TWindow>(windows);
+ Collections.sort(sorted);
+ Collections.reverse(sorted);
+ for (TWindow w: sorted) {
+ w.setX(x);
+ w.setY(y);
+ x++;
+ y++;
+ if (x > getScreen().getWidth()) {
+ x = 0;
+ }
+ if (y >= getScreen().getHeight()) {
+ y = 1;
+ }
+ }
+ }
}