The Tor Browser: mobile/android/chrome/content/SelectHelper.js@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     3  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     4 "use strict";

     6 var SelectHelper = {

     7   _uiBusy: false,

     9   handleEvent: function(aEvent) {

    10     this.handleClick(aEvent.target);

    11   },

    13   handleClick: function(aTarget) {

    14     // if we're busy looking at a select we want to eat any clicks that

    15     // come to us, but not to process them

    16     if (this._uiBusy || !this._isMenu(aTarget) || aTarget.disabled)

    17         return;

    19     this._uiBusy = true;

    20     this.show(aTarget);

    21     this._uiBusy = false;

    22   },

    24   show: function(aElement) {

    25     let list = this.getListForElement(aElement);

    27     let p = new Prompt({

    28       window: aElement.contentDocument

    29     });

    31     if (aElement.multiple) {

    32       p.addButton({

    33         label: Strings.browser.GetStringFromName("selectHelper.closeMultipleSelectDialog")

    34       }).setMultiChoiceItems(list);

    35     } else {

    36       p.setSingleChoiceItems(list);

    37     }

    39     p.show((function(data) {

    40       let selected = data.list;

    42       if (aElement instanceof Ci.nsIDOMXULMenuListElement) {

    43         if (aElement.selectedIndex != selected[0]) {

    44           aElement.selectedIndex = selected[0];

    45           this.fireOnCommand(aElement);

    46         }

    47       } else if (aElement instanceof HTMLSelectElement) {

    48         let changed = false;

    49         let i = 0;

    50         this.forOptions(aElement, function(aNode) {

    51           if (aNode.selected && selected.indexOf(i) == -1) {

    52             changed = true;

    53             aNode.selected = false;

    54           } else if (!aNode.selected && selected.indexOf(i) != -1) {

    55             changed = true;

    56             aNode.selected = true;

    57           }

    58           i++;

    59         });

    61         if (changed)

    62           this.fireOnChange(aElement);

    63       }

    64     }).bind(this));

    65   },

    67   _isMenu: function(aElement) {

    68     return (aElement instanceof HTMLSelectElement ||

    69             aElement instanceof Ci.nsIDOMXULMenuListElement);

    70   },

    72   getListForElement: function(aElement) {

    73     let index = 0;

    74     let items = [];

    75     this.forOptions(aElement, function(aNode, aOptions, aParent) {

    76       let item = {

    77         label: aNode.text || aNode.label,

    78         header: aOptions.isGroup,

    79         disabled: aNode.disabled,

    80         id: index,

    81         selected: aNode.selected

    82       }

    84       if (aParent) {

    85         item.child = true;

    86         item.disabled = item.disabled || aParent.disabled;

    87       }

    88       items.push(item);

    90       index++;

    91     });

    92     return items;

    93   },

    95   forOptions: function(aElement, aFunction, aParent = null) {

    96     let element = aElement;

    97     if (aElement instanceof Ci.nsIDOMXULMenuListElement)

    98       element = aElement.menupopup;

    99     let children = element.children;

   100     let numChildren = children.length;

   102     // if there are no children in this select, we add a dummy row so that at least something appears

   103     if (numChildren == 0)

   104       aFunction.call(this, { label: "" }, { isGroup: false }, aParent);

   106     for (let i = 0; i < numChildren; i++) {

   107       let child = children[i];

   108       if (child instanceof HTMLOptionElement ||

   109           child instanceof Ci.nsIDOMXULSelectControlItemElement) {

   110         aFunction.call(this, child, { isGroup: false }, aParent);

   111       } else if (child instanceof HTMLOptGroupElement) {

   112         aFunction.call(this, child, { isGroup: true });

   113         this.forOptions(child, aFunction, child);

   115       }

   116     }

   117   },

   119   fireOnChange: function(aElement) {

   120     let evt = aElement.ownerDocument.createEvent("Events");

   121     evt.initEvent("change", true, true, aElement.defaultView, 0,

   122                   false, false,

   123                   false, false, null);

   124     setTimeout(function() {

   125       aElement.dispatchEvent(evt);

   126     }, 0);

   127   },

   129   fireOnCommand: function(aElement) {

   130     let evt = aElement.ownerDocument.createEvent("XULCommandEvent");

   131     evt.initCommandEvent("command", true, true, aElement.defaultView, 0,

   132                   false, false,

   133                   false, false, null);

   134     setTimeout(function() {

   135       aElement.dispatchEvent(evt);

   136     }, 0);

   137   }

   138 };

The Tor Browser / file revision