gecko/mobile/android/chrome/content/FindHelper.js
2014-05-23 18:33:45 -07:00

86 lines
2.4 KiB
JavaScript

/* 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";
var FindHelper = {
_finder: null,
_targetTab: null,
_initialViewport: null,
_viewportChanged: false,
observe: function(aMessage, aTopic, aData) {
switch(aTopic) {
case "FindInPage:Find":
this.doFind(aData);
break;
case "FindInPage:Prev":
this.findAgain(aData, true);
break;
case "FindInPage:Next":
this.findAgain(aData, false);
break;
case "Tab:Selected":
case "FindInPage:Closed":
this.findClosed();
break;
}
},
doFind: function(aSearchString) {
if (!this._finder) {
this._targetTab = BrowserApp.selectedTab;
this._finder = this._targetTab.browser.finder;
this._finder.addResultListener(this);
this._initialViewport = JSON.stringify(this._targetTab.getViewport());
this._viewportChanged = false;
}
this._finder.fastFind(aSearchString, false);
},
findAgain: function(aString, aFindBackwards) {
// This can happen if the user taps next/previous after re-opening the search bar
if (!this._finder) {
this.doFind(aString);
return;
}
this._finder.findAgain(aFindBackwards, false, false);
},
findClosed: function() {
// If there's no find in progress, there's nothing to clean up
if (!this._finder)
return;
this._finder.removeSelection();
this._finder.removeResultListener(this);
this._finder = null;
this._targetTab = null;
this._initialViewport = null;
this._viewportChanged = false;
},
onFindResult: function(aData) {
if (aData.result == Ci.nsITypeAheadFind.FIND_NOTFOUND) {
if (this._viewportChanged) {
if (this._targetTab != BrowserApp.selectedTab) {
// this should never happen
Cu.reportError("Warning: selected tab changed during find!");
// fall through and restore viewport on the initial tab anyway
}
this._targetTab.setViewport(JSON.parse(this._initialViewport));
this._targetTab.sendViewportUpdate();
}
} else {
// Disabled until bug 1014113 is fixed
//ZoomHelper.zoomToRect(aData.rect, -1, false, true);
this._viewportChanged = true;
}
}
};