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Issue 29362609: Issue 2879 - Restructure existing process script, split it up into multiple modules (Closed) Base URL: https://hg.adblockplus.org/elemhidehelper
Patch Set: Addressed comments Created Nov. 24, 2016, 2:15 p.m.
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1 /* 1 /*
2 * This Source Code is subject to the terms of the Mozilla Public License 2 * This Source Code is subject to the terms of the Mozilla Public License
3 * version 2.0 (the "License"). You can obtain a copy of the License at 3 * version 2.0 (the "License"). You can obtain a copy of the License at
4 * http://mozilla.org/MPL/2.0/. 4 * http://mozilla.org/MPL/2.0/.
5 */ 5 */
6 6
7 const Ci = Components.interfaces; 7 "use strict";
8 const Cu = Components.utils;
9 8
10 let console; 9 let console;
11 try 10 try
12 { 11 {
13 // Gecko 44+ 12 // Gecko 44+
14 ({console} = Cu.import("resource://gre/modules/Console.jsm", {})); 13 ({console} = Cu.import("resource://gre/modules/Console.jsm", {}));
15 } 14 }
16 catch (e) 15 catch (e)
17 { 16 {
18 ({console} = Cu.import("resource://gre/modules/devtools/Console.jsm", {})); 17 ({console} = Cu.import("resource://gre/modules/devtools/Console.jsm", {}));
19 } 18 }
20 19
21 let DebuggerServer; 20 let DebuggerServer;
22 try 21 try
23 { 22 {
24 // Firefox 44+ 23 // Firefox 44+
25 let {require} = Cu.import("resource://devtools/shared/Loader.jsm", {}); 24 let {require} = Cu.import("resource://devtools/shared/Loader.jsm", {});
26 ({DebuggerServer} = require("devtools/server/main")); 25 ({DebuggerServer} = require("devtools/server/main"));
27 } 26 }
28 catch (e) 27 catch (e)
29 { 28 {
30 ({DebuggerServer} = Cu.import("resource://gre/modules/devtools/dbg-server.jsm" , {})); 29 ({DebuggerServer} = Cu.import("resource://gre/modules/devtools/dbg-server.jsm" , {}));
31 } 30 }
32 31
33 let {Services} = Cu.import("resource://gre/modules/Services.jsm", {}); 32 let {getNodeInfo} = require("./nodeInfo");
34 33
35 let processID = Services.appinfo.processID; 34 function Actor(connection, tabActor)
36 let maxNodeID = 0; 35 {
37 let nodes = new Map(); 36 }
37
38 Actor.prototype = {
39 requestTypes: {
40 nodeinfo: function(request, connection)
41 {
42 let nodeActor = connection.getActor(request.nodeActor);
43 return getNodeInfo(nodeActor ? nodeActor.rawNode : null);
44 }
45 }
46 };
38 47
39 let name = "elemhidehelper"; 48 let name = "elemhidehelper";
40 let actor = { 49 let actor = {
41 constructorFun: Actor, 50 constructorFun: Actor,
42 constructorName: name, 51 constructorName: name,
43 name: name 52 name: name
44 }; 53 };
45 54
46 addMessageListener("ElemHideHelper:Shutdown", onShutdown);
47 addMessageListener("ElemHideHelper:GetNodeInfo", onGetNodeInfo);
48 addMessageListener("ElemHideHelper:Preview", onTogglePreview);
49
50 DebuggerServer.addTabActor(actor, name); 55 DebuggerServer.addTabActor(actor, name);
51 56 onShutdown.add(() =>
52 function onShutdown()
53 { 57 {
54 removeMessageListener("ElemHideHelper:Shutdown", onShutdown);
55 removeMessageListener("ElemHideHelper:GetNodeInfo", onGetNodeInfo);
56 removeMessageListener("ElemHideHelper:Preview", onTogglePreview);
57
58 try 58 try
59 { 59 {
60 DebuggerServer.removeTabActor(actor); 60 DebuggerServer.removeTabActor(actor);
61 } 61 }
62 catch (e) 62 catch (e)
63 { 63 {
64 // The call above will throw in the content process despite succeeding, 64 // The call above will throw in the content process despite succeeding,
65 // see https://bugzilla.mozilla.org/show_bug.cgi?id=1189780. 65 // see https://bugzilla.mozilla.org/show_bug.cgi?id=1189780.
66 Cu.reportError(e); 66 Cu.reportError(e);
67 } 67 }
68 } 68 });
69
70 function onGetNodeInfo(message)
71 {
72 if (Cu.isCrossProcessWrapper(message.objects.element))
73 return;
74
75 let nodeInfo = getNodeInfo(message.objects.element);
76 nodeInfo.messageId = message.data;
77 sendAsyncMessage("ElemHideHelper:GetNodeInfo:Response", nodeInfo);
78 }
79
80 function onTogglePreview(message)
81 {
82 togglePreview(message.data.nodeID, message.data.stylesheetData);
83 if (message.data.forgetNode)
84 forgetNode(message.data.nodeID);
85 }
86
87 function Actor(connection, tabActor)
88 {
89 }
90
91 Actor.prototype = {
92 requestTypes: {
93 nodeinfo: function(request, connection)
94 {
95 let nodeActor = connection.getActor(request.nodeActor);
96 return getNodeInfo(nodeActor ? nodeActor.rawNode: null);
97 }
98 }
99 };
100
101 function getNodeInfo(node)
102 {
103 let nodeData = getNodeData(node);
104 if (nodeData)
105 {
106 let nodeID = processID + "-" + (++maxNodeID);
107 nodes.set(nodeID, {document: node.ownerDocument, style: null});
108 return {
109 host: node.ownerDocument.defaultView.location.hostname,
110 nodeData: nodeData,
111 nodeID: nodeID
112 };
113 }
114
115 return {};
116 }
117
118 function getNodeData(node, parentNode)
119 {
120 if (!node || node.nodeType != Ci.nsIDOMNode.ELEMENT_NODE)
121 return null;
122
123 let result = {};
124 result.tagName = {value: node.tagName, checked: false};
125
126 if (typeof parentNode != "undefined")
127 result.parentNode = parentNode;
128 else
129 result.parentNode = getNodeData(node.parentElement);
130
131 let prevSibling = node.previousElementSibling;
132 result.prevSibling = getNodeData(prevSibling, result.parentNode);
133
134 if (result.parentNode && !prevSibling)
135 result.firstChild = {checked: false};
136
137 let nextSibling = node.nextElementSibling;
138 if (result.parentNode && !nextSibling)
139 result.lastChild = {checked: false};
140
141 result.attributes = [];
142 for (let attribute of node.attributes)
143 {
144 let data = {
145 name: attribute.name,
146 value: attribute.value,
147 selected: attribute.value,
148 checked: false
149 };
150 if (data.name == "id" || data.name == "class")
151 result.attributes.unshift(data);
152 else
153 result.attributes.push(data);
154 }
155
156 if (result.attributes.length >= 2 && result.attributes[1].name == "id")
157 {
158 // Make sure ID attribute comes first
159 let tmp = result.attributes[1];
160 result.attributes[1] = result.attributes[0];
161 result.attributes[0] = tmp;
162 }
163
164 result.customCSS = {selected: "", checked: false};
165 return result;
166 }
167
168 function togglePreview(nodeID, stylesheetData)
169 {
170 let context = nodes.get(nodeID);
171 if (!context)
172 return;
173
174 if (stylesheetData)
175 {
176 if (!context.style || !context.style.parentNode)
177 {
178 context.style = context.document.createElementNS(
179 "http://www.w3.org/1999/xhtml", "style");
180 context.style.setAttribute("type", "text/css");
181 context.document.documentElement.appendChild(context.style);
182 }
183 context.style.textContent = stylesheetData;
184 }
185 else
186 {
187 try
188 {
189 if (context.style && context.style.parentNode)
190 context.style.parentNode.removeChild(context.style);
191 context.style = null;
192 }
193 catch (e)
194 {
195 // If the window was closed (reloaded) we end up with a dead object
196 // reference (https://bugzilla.mozilla.org/show_bug.cgi?id=695480). Just
197 // forget this node then.
198 forgetNode(nodeID);
199 }
200 }
201 }
202
203 function forgetNode(nodeID)
204 {
205 nodes.delete(nodeID);
206 }
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