Java tutorial
/* * Copyright 2000-2016 JetBrains s.r.o. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.intellij.openapi.keymap; import com.intellij.util.ui.UIUtil; import org.intellij.lang.annotations.JdkConstants; import org.jetbrains.annotations.NotNull; import javax.swing.*; import java.awt.*; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; /** * Utility class to display action shortcuts in Mac menus * * @author Konstantin Bulenkov */ @SuppressWarnings("UnusedDeclaration") public class MacKeymapUtil { public static final String ESCAPE = "\u238B"; public static final String TAB = "\u21E5"; public static final String TAB_BACK = "\u21E4"; public static final String CAPS_LOCK = "\u21EA"; public static final String SHIFT = "\u21E7"; public static final String CONTROL = "\u2303"; public static final String OPTION = "\u2325"; public static final String APPLE = "\uF8FF"; public static final String COMMAND = "\u2318"; public static final String SPACE = "\u2423"; public static final String RETURN = "\u23CE"; public static final String BACKSPACE = "\u232B"; public static final String DELETE = "\u2326"; public static final String HOME = "\u2196"; public static final String END = "\u2198"; public static final String PAGE_UP = "\u21DE"; public static final String PAGE_DOWN = "\u21DF"; public static final String UP = "\u2191"; public static final String DOWN = "\u2193"; public static final String LEFT = "\u2190"; public static final String RIGHT = "\u2192"; public static final String CLEAR = "\u2327"; public static final String NUMBER_LOCK = "\u21ED"; public static final String ENTER = "\u2324"; public static final String EJECT = "\u23CF"; public static final String POWER3 = "\u233D"; public static final String NUM_PAD = "\u2328"; @NotNull static String getModifiersText(@JdkConstants.InputEventMask int modifiers) { StringBuilder buf = new StringBuilder(); if ((modifiers & InputEvent.CTRL_MASK) != 0) buf.append(get(CONTROL, "Ctrl+")); if ((modifiers & InputEvent.ALT_MASK) != 0) buf.append(get(OPTION, "Alt+")); if ((modifiers & InputEvent.SHIFT_MASK) != 0) buf.append(get(SHIFT, "Shift+")); if ((modifiers & InputEvent.ALT_GRAPH_MASK) != 0) buf.append(Toolkit.getProperty("AWT.altGraph", "Alt Graph")); if ((modifiers & InputEvent.BUTTON1_MASK) != 0) buf.append(Toolkit.getProperty("AWT.button1", "Button1")); if ((modifiers & InputEvent.META_MASK) != 0) buf.append(get(COMMAND, "Cmd+")); return buf.toString(); } @NotNull public static String getKeyText(int code) { switch (code) { case KeyEvent.VK_BACK_SPACE: return get(BACKSPACE, "Backspace"); case KeyEvent.VK_ESCAPE: return get(ESCAPE, "Escape"); case KeyEvent.VK_CAPS_LOCK: return get(CAPS_LOCK, "Caps Lock"); case KeyEvent.VK_TAB: return get(TAB, "Tab"); case KeyEvent.VK_SPACE: return "Space"; case KeyEvent.VK_DELETE: return get(DELETE, "Delete"); case KeyEvent.VK_HOME: return get(HOME, "Home"); case KeyEvent.VK_END: return get(END, "End"); case KeyEvent.VK_PAGE_UP: return get(PAGE_UP, "Page Up"); case KeyEvent.VK_PAGE_DOWN: return get(PAGE_DOWN, "Page Down"); case KeyEvent.VK_UP: return get(UP, "Up Arrow"); case KeyEvent.VK_DOWN: return get(DOWN, "Down Arrow"); case KeyEvent.VK_LEFT: return get(LEFT, "Left Arrow"); case KeyEvent.VK_RIGHT: return get(RIGHT, "Right Arrow"); case KeyEvent.VK_NUM_LOCK: return get(NUMBER_LOCK, "Num Lock"); case KeyEvent.VK_ENTER: return get(RETURN, "Return"); case KeyEvent.VK_NUMBER_SIGN: return get(NUM_PAD, "NumPad"); case KeyEvent.VK_MULTIPLY: return get(NUM_PAD, "NumPad") + " *"; case KeyEvent.VK_SUBTRACT: return "-"; case KeyEvent.VK_ADD: return "+"; case KeyEvent.VK_MINUS: return "-"; case KeyEvent.VK_PLUS: return "+"; case KeyEvent.VK_DIVIDE: return "NumPad /"; case KeyEvent.VK_NUMPAD0: return "0"; case KeyEvent.VK_NUMPAD1: return "1"; case KeyEvent.VK_NUMPAD2: return "2"; case KeyEvent.VK_NUMPAD3: return "3"; case KeyEvent.VK_NUMPAD4: return "4"; case KeyEvent.VK_NUMPAD5: return "5"; case KeyEvent.VK_NUMPAD6: return "6"; case KeyEvent.VK_NUMPAD7: return "7"; case KeyEvent.VK_NUMPAD8: return "8"; case KeyEvent.VK_NUMPAD9: return "9"; case 0: return "fn"; } return KeyEvent.getKeyText(code); } @NotNull public static String getKeyStrokeText(@NotNull KeyStroke keyStroke) { final String modifiers = getModifiersText(keyStroke.getModifiers()); final String key = KeymapUtil.getKeyText(keyStroke.getKeyCode()); return modifiers + key; } @NotNull private static String get(@NotNull String value, @NotNull String replacement) { Font font = UIUtil.getLabelFont(); return font == null || font.canDisplayUpTo(value) == -1 ? value : replacement; } }