The Tor Browser: browser/metro/base/content/helperui/SelectHelperUI.js@b8a032363ba2 (annotated)

browser/metro/base/content/helperui/SelectHelperUI.js@b8a032363ba2 (annotated)

browser/metro/base/content/helperui/SelectHelperUI.js

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 "use strict";
 /**
  * SelectHelperUI: Provides an interface for making a choice in a list.
  *   Supports simultaneous selection of choices and group headers.
  */
 var SelectHelperUI = {
   _list: null,
   get _container() {
     delete this._container;
     return this._container = document.getElementById("select-container");
   },
   get _listbox() {
     delete this._listbox;
     return this._listbox = document.getElementById("select-commands");
   },
   get _menuPopup() {
     let popup = document.getElementById("select-popup");
     delete this._menuPopup;
     return this._menuPopup = new MenuPopup(this._container, popup);
   },
   show: function selectHelperShow(aList, aTitle, aRect) {
     if (this._list) {
       this.reset();
     }
     this._list = aList;
     this._listbox.setAttribute("seltype", aList.multiple ? "multiple" : "single");
     let firstSelected = null;
     // Using a fragment prevent us to hang on huge list
     let fragment = document.createDocumentFragment();
     let choices = aList.choices;
     let selectedItems = [];
     for (let i = 0; i < choices.length; i++) {
       let choice = choices[i];
       let item = document.createElement("richlistitem");
       let label = document.createElement("label");
       item.setAttribute("class", "option-command listitem-iconic");
       item.setAttribute("flex", "1");
       item.setAttribute("crop", "center");
       label.setAttribute("value", choice.text);
       item.appendChild(label);
       item.setAttribute("oldstate", "false");
       choice.disabled ? item.setAttribute("disabled", "true")
                       : item.removeAttribute("disabled");
       fragment.appendChild(item);
       if (choice.group) {
         item.classList.add("optgroup");
         continue;
       }
       item.optionIndex = choice.optionIndex;
       item.choiceIndex = i;
       if (choice.inGroup) {
         item.classList.add("in-optgroup");
       }
       if (choice.selected) {
         firstSelected = firstSelected || item;
         selectedItems.push(item);
       }
     }
     this._listbox.appendChild(fragment);
     this._container.addEventListener("click", this, false);
     window.addEventListener("MozPrecisePointer", this, false);
     this._menuPopup.show(this._positionOptions(aRect));
     // Setup pre-selected items. Note, this has to happen after show.
     this._listbox.clearSelection();
     for (let item of selectedItems) {
       this._listbox.addItemToSelection(item);
       item.setAttribute("oldstate", "true");
     }
     this._listbox.ensureElementIsVisible(firstSelected);
   },
   reset: function selectHelperReset() {
     this._updateControl();
     while (this._listbox.hasChildNodes())
       this._listbox.removeChild(this._listbox.lastChild);
     this._list = null;
   },
   hide: function selectHelperHide() {
     if (!this._list)
       return;
     this._container.removeEventListener("click", this, false);
     window.removeEventListener("MozPrecisePointer", this, false);
     this._menuPopup.hide();
     this.reset();
   },
   _positionOptions: function _positionOptions(aRect) {
     let browser = Browser.selectedBrowser;
     let p0 = browser.ptBrowserToClient(aRect.left, aRect.top);
     let p1 = browser.ptBrowserToClient(aRect.right, aRect.bottom);
     return {
       xPos: p0.x,
       yPos: p1.y,
       bottomAligned: false,
       leftAligned: true
     };
   },
   _updateControl: function _selectHelperUpdateControl() {
     Browser.selectedBrowser.messageManager.sendAsyncMessage("FormAssist:ChoiceChange", { });
   },
   handleEvent: function selectHelperHandleEvent(aEvent) {
     switch (aEvent.type) {
       case "MozPrecisePointer":
         this.hide();
       break;
       case "click":
         let item = aEvent.target;
         if (item && item.hasOwnProperty("optionIndex")) {
           if (this._list.multiple) {
             // item.selected is always true here since that's how richlistbox handles
             // mouse click events. We track our own state so that we can toggle here
             // on click events. Iniial 'oldstate' values are setup in show above.
             if (item.getAttribute("oldstate") == "true") {
               item.setAttribute("oldstate", "false");
             } else {
               item.setAttribute("oldstate", "true");
             }
             // Fix up selected items - richlistbox will clear selection on click events
             // so we need to set selection on the items the user has previously chosen.
             this._listbox.clearSelection();
             for (let node of this._listbox.childNodes) {
               if (node.getAttribute("oldstate") == "true") {
                 this._listbox.addItemToSelection(node);
               }
             }
           }
           // Let the form element know we've added or removed a selected item.
           this.onSelect(item.optionIndex, item.selected);
         }
         break;
     }
   },
   onSelect: function selectHelperOnSelect(aIndex, aSelected) {
     Browser.selectedBrowser.messageManager.sendAsyncMessage("FormAssist:ChoiceSelect", {
       index: aIndex,
       selected: aSelected
     });
     if (!this._list.multiple) {
       this.hide();
     }
   }
 };