89 lines
3.5 KiB
JavaScript
89 lines
3.5 KiB
JavaScript
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/*
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* Copyright (C) 2010 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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WebInspector.HelpScreen = function(title)
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{
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this._element = document.createElement("div");
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this._element.className = "help-window-outer";
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this._element.addEventListener("keydown", this._onKeyDown.bind(this), false);
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var mainWindow = this._element.createChild("div", "help-window-main");
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var captionWindow = mainWindow.createChild("div", "help-window-caption");
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var closeButton = captionWindow.createChild("button", "help-close-button");
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this.contentElement = mainWindow.createChild("div", "help-content");
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this.contentElement.tabIndex = 0;
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this.contentElement.addEventListener("blur", this._onBlur.bind(this), false);
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captionWindow.createChild("h1", "help-window-title").innerText = title;
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closeButton.innerText = "\u2716"; // Code stands for HEAVY MULTIPLICATION X.
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closeButton.addEventListener("click", this._hide.bind(this), false);
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this._closeKeys = [
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WebInspector.KeyboardShortcut.Keys.Enter.code,
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WebInspector.KeyboardShortcut.Keys.Esc.code,
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WebInspector.KeyboardShortcut.Keys.Space.code,
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];
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document.body.appendChild(this._element);
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}
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WebInspector.HelpScreen.prototype = {
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show: function()
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{
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if (this._isShown)
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return;
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this._element.style.visibility = "visible";
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this._isShown = true;
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this._previousFocusElement = WebInspector.currentFocusElement;
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WebInspector.currentFocusElement = this.contentElement;
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},
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_hide: function()
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{
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this._isShown = false;
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this._element.style.visibility = "hidden";
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WebInspector.currentFocusElement = this._previousFocusElement;
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},
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_onKeyDown: function(event)
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{
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if (this._isShown && this._closeKeys.indexOf(event.keyCode) >= 0) {
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this._hide();
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event.stopPropagation();
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}
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},
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_onBlur: function()
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{
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// Pretend we're modal, grab focus back if we're still shown.
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if (this._isShown)
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WebInspector.currentFocusElement = this.contentElement;
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}
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}
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