gecko-dev/toolkit/modules/RemoteFinder.jsm

263 строки
8.4 KiB
JavaScript

// -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
// vim: set ts=2 sw=2 sts=2 et tw=80: */
// 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/.
this.EXPORTED_SYMBOLS = ["RemoteFinder", "RemoteFinderListener"];
const Ci = Components.interfaces;
const Cc = Components.classes;
const Cu = Components.utils;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
XPCOMUtils.defineLazyGetter(this, "GetClipboardSearchString",
() => Cu.import("resource://gre/modules/Finder.jsm", {}).GetClipboardSearchString
);
function RemoteFinder(browser) {
this._listeners = new Set();
this._searchString = null;
this.swapBrowser(browser);
}
RemoteFinder.prototype = {
swapBrowser: function(aBrowser) {
if (this._messageManager) {
this._messageManager.removeMessageListener("Finder:Result", this);
this._messageManager.removeMessageListener("Finder:MatchesResult", this);
this._messageManager.removeMessageListener("Finder:CurrentSelectionResult",this);
}
else {
aBrowser.messageManager.sendAsyncMessage("Finder:Initialize");
}
this._browser = aBrowser;
this._messageManager = this._browser.messageManager;
this._messageManager.addMessageListener("Finder:Result", this);
this._messageManager.addMessageListener("Finder:MatchesResult", this);
this._messageManager.addMessageListener("Finder:CurrentSelectionResult", this);
// Ideally listeners would have removed themselves but that doesn't happen
// right now
this._listeners.clear();
},
addResultListener: function (aListener) {
this._listeners.add(aListener);
},
removeResultListener: function (aListener) {
this._listeners.delete(aListener);
},
receiveMessage: function (aMessage) {
// Only Finder:Result messages have the searchString field.
let callback;
let params;
switch (aMessage.name) {
case "Finder:Result":
this._searchString = aMessage.data.searchString;
callback = "onFindResult";
params = [ aMessage.data ];
break;
case "Finder:MatchesResult":
callback = "onMatchesCountResult";
params = [ aMessage.data ];
break;
case "Finder:CurrentSelectionResult":
callback = "onCurrentSelection";
params = [ aMessage.data.selection, aMessage.data.initial ];
break;
}
for (let l of this._listeners) {
// Don't let one callback throwing stop us calling the rest
try {
l[callback].apply(l, params);
}
catch (e) {
Cu.reportError(e);
}
}
},
get searchString() {
return this._searchString;
},
get clipboardSearchString() {
return GetClipboardSearchString(this._browser.loadContext);
},
setSearchStringToSelection() {
this._browser.messageManager.sendAsyncMessage("Finder:SetSearchStringToSelection", {});
},
set caseSensitive(aSensitive) {
this._browser.messageManager.sendAsyncMessage("Finder:CaseSensitive",
{ caseSensitive: aSensitive });
},
getInitialSelection: function() {
this._browser.messageManager.sendAsyncMessage("Finder:GetInitialSelection", {});
},
fastFind: function (aSearchString, aLinksOnly, aDrawOutline) {
this._browser.messageManager.sendAsyncMessage("Finder:FastFind",
{ searchString: aSearchString,
linksOnly: aLinksOnly,
drawOutline: aDrawOutline });
},
findAgain: function (aFindBackwards, aLinksOnly, aDrawOutline) {
this._browser.messageManager.sendAsyncMessage("Finder:FindAgain",
{ findBackwards: aFindBackwards,
linksOnly: aLinksOnly,
drawOutline: aDrawOutline });
},
highlight: function (aHighlight, aWord) {
this._browser.messageManager.sendAsyncMessage("Finder:Highlight",
{ highlight: aHighlight,
word: aWord });
},
enableSelection: function () {
this._browser.messageManager.sendAsyncMessage("Finder:EnableSelection");
},
removeSelection: function () {
this._browser.messageManager.sendAsyncMessage("Finder:RemoveSelection");
},
focusContent: function () {
// Allow Finder listeners to cancel focusing the content.
for (let l of this._listeners) {
try {
if ("shouldFocusContent" in l &&
!l.shouldFocusContent())
return;
} catch (ex) {
Cu.reportError(ex);
}
}
this._browser.focus();
this._browser.messageManager.sendAsyncMessage("Finder:FocusContent");
},
keyPress: function (aEvent) {
this._browser.messageManager.sendAsyncMessage("Finder:KeyPress",
{ keyCode: aEvent.keyCode,
ctrlKey: aEvent.ctrlKey,
metaKey: aEvent.metaKey,
altKey: aEvent.altKey,
shiftKey: aEvent.shiftKey });
},
requestMatchesCount: function (aSearchString, aMatchLimit, aLinksOnly) {
this._browser.messageManager.sendAsyncMessage("Finder:MatchesCount",
{ searchString: aSearchString,
matchLimit: aMatchLimit,
linksOnly: aLinksOnly });
}
}
function RemoteFinderListener(global) {
let {Finder} = Cu.import("resource://gre/modules/Finder.jsm", {});
this._finder = new Finder(global.docShell);
this._finder.addResultListener(this);
this._global = global;
for (let msg of this.MESSAGES) {
global.addMessageListener(msg, this);
}
}
RemoteFinderListener.prototype = {
MESSAGES: [
"Finder:CaseSensitive",
"Finder:FastFind",
"Finder:FindAgain",
"Finder:SetSearchStringToSelection",
"Finder:GetInitialSelection",
"Finder:Highlight",
"Finder:EnableSelection",
"Finder:RemoveSelection",
"Finder:FocusContent",
"Finder:KeyPress",
"Finder:MatchesCount"
],
onFindResult: function (aData) {
this._global.sendAsyncMessage("Finder:Result", aData);
},
// When the child receives messages with results of requestMatchesCount,
// it passes them forward to the parent.
onMatchesCountResult: function (aData) {
this._global.sendAsyncMessage("Finder:MatchesResult", aData);
},
receiveMessage: function (aMessage) {
let data = aMessage.data;
switch (aMessage.name) {
case "Finder:CaseSensitive":
this._finder.caseSensitive = data.caseSensitive;
break;
case "Finder:SetSearchStringToSelection": {
let selection = this._finder.setSearchStringToSelection();
this._global.sendAsyncMessage("Finder:CurrentSelectionResult",
{ selection: selection,
initial: false });
break;
}
case "Finder:GetInitialSelection": {
let selection = this._finder.getActiveSelectionText();
this._global.sendAsyncMessage("Finder:CurrentSelectionResult",
{ selection: selection,
initial: true });
break;
}
case "Finder:FastFind":
this._finder.fastFind(data.searchString, data.linksOnly, data.drawOutline);
break;
case "Finder:FindAgain":
this._finder.findAgain(data.findBackwards, data.linksOnly, data.drawOutline);
break;
case "Finder:Highlight":
this._finder.highlight(data.highlight, data.word);
break;
case "Finder:EnableSelection":
this._finder.enableSelection();
break;
case "Finder:RemoveSelection":
this._finder.removeSelection();
break;
case "Finder:FocusContent":
this._finder.focusContent();
break;
case "Finder:KeyPress":
this._finder.keyPress(data);
break;
case "Finder:MatchesCount":
this._finder.requestMatchesCount(data.searchString, data.matchLimit, data.linksOnly);
break;
}
}
};