--- /dev/null
+/**
+ * Jexer - Java Text User Interface
+ *
+ * License: LGPLv3 or later
+ *
+ * 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.
+ *
+ * Copyright (C) 2015 Kevin Lamonte
+ *
+ * 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.
+ *
+ * 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.menu;
+
+import jexer.TKeypress;
+import jexer.TWidget;
+import jexer.bits.CellAttributes;
+import jexer.bits.GraphicsChars;
+import jexer.bits.MnemonicString;
+import jexer.event.TKeypressEvent;
+import jexer.event.TMouseEvent;
+import jexer.event.TMenuEvent;
+import static jexer.TKeypress.*;
+
+/**
+ * TMenuItem implements a menu item.
+ */
+public class TMenuItem extends TWidget {
+
+ /**
+ * Label for this menu item.
+ */
+ private String label;
+
+ /**
+ * Menu ID. IDs less than 1024 are reserved for common system
+ * functions. Existing ones are defined in TMenu, i.e. TMenu.MID_EXIT.
+ */
+ private int id = TMenu.MID_UNUSED;
+
+ /**
+ * When true, this item can be checked or unchecked.
+ */
+ private boolean checkable = false;
+
+ /**
+ * When true, this item is checked.
+ */
+ private boolean checked = false;
+
+ /**
+ * Global shortcut key.
+ */
+ private TKeypress key;
+
+ /**
+ * When true, a global accelerator can be used to select this item.
+ */
+ private boolean hasKey = false;
+
+ /**
+ * The title string. Use '&' to specify a mnemonic, i.e. "&File" will
+ * highlight the 'F' and allow 'f' or 'F' to select it.
+ */
+ private MnemonicString mnemonic;
+
+ /**
+ * Get the mnemonic string for this menu item.
+ *
+ * @return mnemonic string
+ */
+ public final MnemonicString getMnemonic() {
+ return mnemonic;
+ }
+
+ /**
+ * Set a global accelerator key for this menu item.
+ *
+ * @param key global keyboard accelerator
+ */
+ public final void setKey(final TKeypress key) {
+ hasKey = true;
+ this.key = key;
+
+ int newWidth = (label.length() + 4 + key.toString().length() + 2);
+ if (newWidth > getWidth()) {
+ setWidth(newWidth);
+ }
+ }
+
+ /**
+ * Package private constructor.
+ *
+ * @param parent parent widget
+ * @param id menu id
+ * @param x column relative to parent
+ * @param y row relative to parent
+ * @param label menu item title
+ */
+ TMenuItem(final TMenu parent, final int id, final int x, final int y,
+ final String label) {
+
+ // Set parent and window
+ super(parent);
+
+ mnemonic = new MnemonicString(label);
+
+ setX(x);
+ setY(y);
+ setHeight(1);
+ this.label = mnemonic.getRawLabel();
+ setWidth(label.length() + 4);
+ this.id = id;
+
+ // Default state for some known menu items
+ switch (id) {
+
+ case TMenu.MID_CUT:
+ setEnabled(false);
+ break;
+ case TMenu.MID_COPY:
+ setEnabled(false);
+ break;
+ case TMenu.MID_PASTE:
+ setEnabled(false);
+ break;
+ case TMenu.MID_CLEAR:
+ setEnabled(false);
+ break;
+
+ case TMenu.MID_TILE:
+ break;
+ case TMenu.MID_CASCADE:
+ break;
+ case TMenu.MID_CLOSE_ALL:
+ break;
+ case TMenu.MID_WINDOW_MOVE:
+ break;
+ case TMenu.MID_WINDOW_ZOOM:
+ break;
+ case TMenu.MID_WINDOW_NEXT:
+ break;
+ case TMenu.MID_WINDOW_PREVIOUS:
+ break;
+ case TMenu.MID_WINDOW_CLOSE:
+ break;
+ default:
+ break;
+ }
+
+ }
+
+ /**
+ * Returns true if the mouse is currently on the menu item.
+ *
+ * @param mouse mouse event
+ */
+ private boolean mouseOnMenuItem(final TMouseEvent mouse) {
+ if ((mouse.getY() == 0)
+ && (mouse.getX() >= 0)
+ && (mouse.getX() < getWidth())
+ ) {
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Draw a menu item with label.
+ */
+ @Override
+ public void draw() {
+ CellAttributes background = getTheme().getColor("tmenu");
+ CellAttributes menuColor;
+ CellAttributes menuMnemonicColor;
+ if (getAbsoluteActive()) {
+ menuColor = getTheme().getColor("tmenu.highlighted");
+ menuMnemonicColor = getTheme().getColor("tmenu.mnemonic.highlighted");
+ } else {
+ if (getEnabled()) {
+ menuColor = getTheme().getColor("tmenu");
+ menuMnemonicColor = getTheme().getColor("tmenu.mnemonic");
+ } else {
+ menuColor = getTheme().getColor("tmenu.disabled");
+ menuMnemonicColor = getTheme().getColor("tmenu.disabled");
+ }
+ }
+
+ char cVSide = GraphicsChars.WINDOW_SIDE;
+ getScreen().vLineXY(0, 0, 1, cVSide, background);
+ getScreen().vLineXY(getWidth() - 1, 0, 1, cVSide, background);
+
+ getScreen().hLineXY(1, 0, getWidth() - 2, ' ', menuColor);
+ getScreen().putStrXY(2, 0, mnemonic.getRawLabel(), menuColor);
+ if (hasKey) {
+ String keyLabel = key.toString();
+ getScreen().putStrXY((getWidth() - keyLabel.length() - 2), 0,
+ keyLabel, menuColor);
+ }
+ if (mnemonic.getShortcutIdx() >= 0) {
+ getScreen().putCharXY(2 + mnemonic.getShortcutIdx(), 0,
+ mnemonic.getShortcut(), menuMnemonicColor);
+ }
+ if (checked) {
+ assert (checkable);
+ getScreen().putCharXY(1, 0, GraphicsChars.CHECK, menuColor);
+ }
+
+ }
+
+ /**
+ * Dispatch event(s) due to selection or click.
+ */
+ public void dispatch() {
+ assert (getEnabled());
+
+ getApplication().addMenuEvent(new TMenuEvent(id));
+ if (checkable) {
+ checked = !checked;
+ }
+ }
+
+ /**
+ * Handle mouse button presses.
+ *
+ * @param event mouse button press event
+ */
+ /* TODO: this was commented out in d-tui, why?
+ @Override
+ public void onMouseDown(final TMouseEvent event) {
+ if ((mouseOnMenuItem(event)) && (event.mouse1)) {
+ dispatch();
+ return;
+ }
+ }
+ */
+
+ /**
+ * Handle mouse button releases.
+ *
+ * @param mouse mouse button release event
+ */
+ @Override
+ public void onMouseUp(final TMouseEvent mouse) {
+ if ((mouseOnMenuItem(mouse)) && (mouse.getMouse1())) {
+ dispatch();
+ return;
+ }
+ }
+
+ /**
+ * Handle keystrokes.
+ *
+ * @param keypress keystroke event
+ */
+ @Override
+ public void onKeypress(final TKeypressEvent keypress) {
+ if (keypress.equals(kbEnter)) {
+ dispatch();
+ return;
+ }
+
+ // Pass to parent for the things we don't care about.
+ super.onKeypress(keypress);
+ }
+}
git://git.nikiroo.be / fanfix.git / blobdiff