The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/toolkit/modules/SelectContentHelper.jsm	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,110 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +"use strict";
     1.9 +
    1.10 +const Cc = Components.classes;
    1.11 +const Ci = Components.interfaces;
    1.12 +const Cu = Components.utils;
    1.13 +
    1.14 +Cu.import("resource://gre/modules/XPCOMUtils.jsm");
    1.15 +
    1.16 +XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",
    1.17 +                                  "resource://gre/modules/BrowserUtils.jsm");
    1.18 +
    1.19 +this.EXPORTED_SYMBOLS = [
    1.20 +  "SelectContentHelper"
    1.21 +];
    1.22 +
    1.23 +this.SelectContentHelper = function (aElement, aGlobal) {
    1.24 +  this.element = aElement;
    1.25 +  this.global = aGlobal;
    1.26 +  this.init();
    1.27 +  this.showDropDown();
    1.28 +}
    1.29 +
    1.30 +this.SelectContentHelper.prototype = {
    1.31 +  init: function() {
    1.32 +    this.global.addMessageListener("Forms:SelectDropDownItem", this);
    1.33 +    this.global.addMessageListener("Forms:DismissedDropDown", this);
    1.34 +    this.global.addEventListener("pagehide", this);
    1.35 +  },
    1.36 +
    1.37 +  uninit: function() {
    1.38 +    this.global.removeMessageListener("Forms:SelectDropDownItem", this);
    1.39 +    this.global.removeMessageListener("Forms:DismissedDropDown", this);
    1.40 +    this.global.removeEventListener("pagehide", this);
    1.41 +    this.element = null;
    1.42 +    this.global = null;
    1.43 +  },
    1.44 +
    1.45 +  showDropDown: function() {
    1.46 +    let rect = this._getBoundingContentRect();
    1.47 +
    1.48 +    this.global.sendAsyncMessage("Forms:ShowDropDown", {
    1.49 +      rect: rect,
    1.50 +      options: this._buildOptionList(),
    1.51 +      selectedIndex: this.element.selectedIndex,
    1.52 +    });
    1.53 +  },
    1.54 +
    1.55 +  _getBoundingContentRect: function() {
    1.56 +    return BrowserUtils.getElementBoundingScreenRect(this.element);
    1.57 +  },
    1.58 +
    1.59 +  _buildOptionList: function() {
    1.60 +    return buildOptionListForChildren(this.element);
    1.61 +  },
    1.62 +
    1.63 +  receiveMessage: function(message) {
    1.64 +    switch (message.name) {
    1.65 +      case "Forms:SelectDropDownItem":
    1.66 +        if (this.element.selectedIndex != message.data.value) {
    1.67 +          this.element.selectedIndex = message.data.value;
    1.68 +
    1.69 +          let event = this.element.ownerDocument.createEvent("Events");
    1.70 +          event.initEvent("change", true, true);
    1.71 +          this.element.dispatchEvent(event);
    1.72 +        }
    1.73 +
    1.74 +        //intentional fall-through
    1.75 +      case "Forms:DismissedDropDown":
    1.76 +        this.uninit();
    1.77 +        break;
    1.78 +    }
    1.79 +  },
    1.80 +
    1.81 +  handleEvent: function(event) {
    1.82 +    switch (event.type) {
    1.83 +      case "pagehide":
    1.84 +        this.global.sendAsyncMessage("Forms:HideDropDown", {});
    1.85 +        this.uninit();
    1.86 +        break;
    1.87 +    }
    1.88 +  }
    1.89 +
    1.90 +}
    1.91 +
    1.92 +function buildOptionListForChildren(node) {
    1.93 +  let result = [];
    1.94 +  for (let child = node.firstChild; child; child = child.nextSibling) {
    1.95 +    if (child.tagName == 'OPTION' || child.tagName == 'OPTGROUP') {
    1.96 +      let info = {
    1.97 +        tagName: child.tagName,
    1.98 +        textContent: child.tagName == 'OPTGROUP' ? child.getAttribute("label")
    1.99 +                                                 : child.textContent,
   1.100 +        // XXX this uses a highlight color when this is the selected element.
   1.101 +        // We need to suppress such highlighting in the content process to get
   1.102 +        // the option's correct unhighlighted color here.
   1.103 +        // We also need to detect default color vs. custom so that a standard
   1.104 +        // color does not override color: menutext in the parent.
   1.105 +        // backgroundColor: computedStyle.backgroundColor,
   1.106 +        // color: computedStyle.color,
   1.107 +        children: child.tagName == 'OPTGROUP' ? buildOptionListForChildren(child) : []
   1.108 +      };
   1.109 +      result.push(info);
   1.110 +    }
   1.111 +  }
   1.112 +  return result;
   1.113 +}