The Tor Browser: mobile/android/chrome/content/FindHelper.js@fc2d59ddac77

     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 FindHelper = {

     7   _finder: null,

     8   _targetTab: null,

     9   _initialViewport: null,

    10   _viewportChanged: false,

    12   observe: function(aMessage, aTopic, aData) {

    13     switch(aTopic) {

    14       case "FindInPage:Find":

    15         this.doFind(aData);

    16         break;

    18       case "FindInPage:Prev":

    19         this.findAgain(aData, true);

    20         break;

    22       case "FindInPage:Next":

    23         this.findAgain(aData, false);

    24         break;

    26       case "Tab:Selected":

    27       case "FindInPage:Closed":

    28         this.findClosed();

    29         break;

    30     }

    31   },

    33   doFind: function(aSearchString) {

    34     if (!this._finder) {

    35       this._targetTab = BrowserApp.selectedTab;

    36       this._finder = this._targetTab.browser.finder;

    37       this._finder.addResultListener(this);

    38       this._initialViewport = JSON.stringify(this._targetTab.getViewport());

    39       this._viewportChanged = false;

    40     }

    42     this._finder.fastFind(aSearchString, false);

    43   },

    45   findAgain: function(aString, aFindBackwards) {

    46     // This can happen if the user taps next/previous after re-opening the search bar

    47     if (!this._finder) {

    48       this.doFind(aString);

    49       return;

    50     }

    52     this._finder.findAgain(aFindBackwards, false, false);

    53   },

    55   findClosed: function() {

    56     // If there's no find in progress, there's nothing to clean up

    57     if (!this._finder)

    58       return;

    60     this._finder.removeSelection();

    61     this._finder.removeResultListener(this);

    62     this._finder = null;

    63     this._targetTab = null;

    64     this._initialViewport = null;

    65     this._viewportChanged = false;

    66   },

    68   onFindResult: function(aData) {

    69     if (aData.result == Ci.nsITypeAheadFind.FIND_NOTFOUND) {

    70       if (this._viewportChanged) {

    71         if (this._targetTab != BrowserApp.selectedTab) {

    72           // this should never happen

    73           Cu.reportError("Warning: selected tab changed during find!");

    74           // fall through and restore viewport on the initial tab anyway

    75         }

    76         this._targetTab.setViewport(JSON.parse(this._initialViewport));

    77         this._targetTab.sendViewportUpdate();

    78       }

    79     } else {

    80       // Disabled until bug 1014113 is fixed

    81       //ZoomHelper.zoomToRect(aData.rect, -1, false, true);

    82       this._viewportChanged = true;

    83     }

    84   }

    85 };

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