1/* 2 * Copyright (C) 2010 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31/** 32 * @constructor 33 * @param {string=} title 34 * @extends {WebInspector.View} 35 */ 36WebInspector.HelpScreen = function(title) 37{ 38 WebInspector.View.call(this); 39 this.markAsRoot(); 40 this.registerRequiredCSS("helpScreen.css"); 41 42 this.element.className = "help-window-outer"; 43 this.element.addEventListener("keydown", this._onKeyDown.bind(this), false); 44 this.element.tabIndex = 0; 45 this.element.addEventListener("focus", this._onBlur.bind(this), false); 46 47 if (title) { 48 var mainWindow = this.element.createChild("div", "help-window-main"); 49 var captionWindow = mainWindow.createChild("div", "help-window-caption"); 50 captionWindow.appendChild(this._createCloseButton()); 51 this.contentElement = mainWindow.createChild("div", "help-content"); 52 captionWindow.createChild("h1", "help-window-title").textContent = title; 53 } 54} 55 56/** 57 * @type {WebInspector.HelpScreen} 58 */ 59WebInspector.HelpScreen._visibleScreen = null; 60 61WebInspector.HelpScreen.prototype = { 62 _createCloseButton: function() 63 { 64 var closeButton = document.createElement("button"); 65 closeButton.className = "help-close-button"; 66 closeButton.textContent = "\u2716"; // Code stands for HEAVY MULTIPLICATION X. 67 closeButton.addEventListener("click", this.hide.bind(this), false); 68 return closeButton; 69 }, 70 71 showModal: function() 72 { 73 var visibleHelpScreen = WebInspector.HelpScreen._visibleScreen; 74 if (visibleHelpScreen === this) 75 return; 76 77 if (visibleHelpScreen) 78 visibleHelpScreen.hide(); 79 WebInspector.HelpScreen._visibleScreen = this; 80 this.show(document.body); 81 this.focus(); 82 }, 83 84 hide: function() 85 { 86 if (!this.isShowing()) 87 return; 88 89 WebInspector.HelpScreen._visibleScreen = null; 90 91 WebInspector.restoreFocusFromElement(this.element); 92 this.detach(); 93 }, 94 95 /** 96 * @param {number} keyCode 97 * @return {boolean} 98 */ 99 isClosingKey: function(keyCode) 100 { 101 return [ 102 WebInspector.KeyboardShortcut.Keys.Enter.code, 103 WebInspector.KeyboardShortcut.Keys.Esc.code, 104 WebInspector.KeyboardShortcut.Keys.Space.code, 105 ].indexOf(keyCode) >= 0; 106 }, 107 108 _onKeyDown: function(event) 109 { 110 if (this.isShowing() && this.isClosingKey(event.keyCode)) { 111 this.hide(); 112 event.consume(); 113 } 114 }, 115 116 _onBlur: function(event) 117 { 118 // Pretend we're modal, grab focus back if we're still shown. 119 if (this.isShowing() && !this.element.isSelfOrAncestor(event.target)) 120 WebInspector.setCurrentFocusElement(this.element); 121 }, 122 123 __proto__: WebInspector.View.prototype 124} 125 126/** 127 * @constructor 128 * @param {string=} title 129 * @param {string=} message 130 * @extends {WebInspector.HelpScreen} 131 */ 132WebInspector.HelpScreenUntilReload = function(title, message) 133{ 134 WebInspector.HelpScreen.call(this, title); 135 var p = this.contentElement.createChild("p"); 136 p.addStyleClass("help-section"); 137 p.textContent = message; 138 WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.GlobalObjectCleared, this.hide, this); 139} 140 141WebInspector.HelpScreenUntilReload.prototype = { 142 /** 143 * @override 144 */ 145 willHide: function() 146 { 147 WebInspector.debuggerModel.removeEventListener(WebInspector.DebuggerModel.Events.GlobalObjectCleared, this.hide, this); 148 WebInspector.HelpScreen.prototype.willHide.call(this); 149 }, 150 151 __proto__: WebInspector.HelpScreen.prototype 152} 153 154