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Unified Diff: chrome/content/actor.jsm

Issue 29323107: Issue 2816 - Restore Preview functionality (Closed)
Patch Set: Created July 30, 2015, 1:09 p.m.
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Index: chrome/content/actor.jsm
===================================================================
--- a/chrome/content/actor.jsm
+++ b/chrome/content/actor.jsm
@@ -1,21 +1,28 @@
/*
* This Source Code is subject to the terms of the Mozilla Public License
* version 2.0 (the "License"). You can obtain a copy of the License at
* http://mozilla.org/MPL/2.0/.
*/
-let EXPORTED_SYMBOLS = ["shutdown", "getNodeInfo"];
+let EXPORTED_SYMBOLS = ["shutdown", "getNodeInfo", "togglePreview",
+ "forgetNode"];
const Ci = Components.interfaces;
const Cu = Components.utils;
let {console} = Cu.import("resource://gre/modules/devtools/Console.jsm", {});
let {DebuggerServer} = Cu.import("resource://gre/modules/devtools/dbg-server.jsm", {});
+let {Services} = Cu.import("resource://gre/modules/Services.jsm", {});
+
+let processID = Services.appinfo.processID;
+let maxNodeID = 0;
+let nodes = new Map();
+
let name = "elemhidehelper";
let actor = {
constructorFun: Actor,
constructorName: name,
name: name
};
DebuggerServer.addTabActor(actor, name);
@@ -35,38 +42,41 @@ function Actor(connection, tabActor)
{
}
Actor.prototype = {
requestTypes: {
nodeinfo: function(request, connection)
{
let nodeActor = connection.getActor(request.nodeActor);
- if (!nodeActor || !nodeActor.rawNode ||
- nodeActor.rawNode.nodeType != Ci.nsIDOMNode.ELEMENT_NODE)
- {
- return {};
- }
-
- return getNodeInfo(nodeActor.rawNode);
+ return getNodeInfo(nodeActor ? nodeActor.rawNode: null);
}
}
};
function getNodeInfo(node)
{
- return {
- host: node.ownerDocument.defaultView.location.hostname,
- nodeData: getNodeData(node)
- };
+ let nodeData = getNodeData(node);
+ if (nodeData)
+ {
+ let nodeID = processID + "-" + (++maxNodeID);
+ nodes.set(nodeID, {document: node.ownerDocument, style: null});
+ return {
+ host: node.ownerDocument.defaultView.location.hostname,
+ nodeData: nodeData,
+ nodeID: nodeID
+ };
+ }
+
+ return {};
}
function getNodeData(node, parentNode)
{
- if (!node)
+ if (!node || node.nodeType != Ci.nsIDOMNode.ELEMENT_NODE)
return null;
let result = {};
result.tagName = {value: node.tagName, checked: false};
if (typeof parentNode != "undefined")
result.parentNode = parentNode;
else
@@ -103,8 +113,47 @@ function getNodeData(node, parentNode)
let tmp = result.attributes[1];
result.attributes[1] = result.attributes[0];
result.attributes[0] = tmp;
}
result.customCSS = {selected: "", checked: false};
return result;
}
+
+function togglePreview(nodeID, stylesheetData)
+{
+ let context = nodes.get(nodeID);
+ if (!context)
+ return;
+
+ if (stylesheetData)
+ {
+ if (!context.style || !context.style.parentNode)
+ {
+ context.style = context.document.createElementNS(
+ "http://www.w3.org/1999/xhtml", "style");
+ context.style.setAttribute("type", "text/css");
+ context.document.documentElement.appendChild(context.style);
+ }
+ context.style.textContent = stylesheetData;
+ }
+ else
+ {
+ try
+ {
+ if (context.style && context.style.parentNode)
+ context.style.parentNode.removeChild(context.style);
+ }
+ catch (e)
+ {
+ // If the window was closed (reloaded) we end up with dead object
+ // reference (https://bugzilla.mozilla.org/show_bug.cgi?id=695480). Just
+ // ignore this case, we don't need to do anything.
Thomas Greiner 2015/07/31 12:48:03 If the context is no longer valid anyway, what abo
Wladimir Palant 2015/07/31 14:40:04 Done.
+ }
+ context.style = null;
+ }
+}
+
+function forgetNode(nodeID)
+{
+ nodes.delete(nodeID);
+}
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