1 /*
2 * Copyright (c) 2011 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "PageScriptDebugServer.h"
33
34 #if ENABLE(JAVASCRIPT_DEBUGGER)
35
36 #include "Frame.h"
37 #include "Page.h"
38 #include "ScriptDebugListener.h"
39 #include "V8Binding.h"
40 #include "V8DOMWindow.h"
41 #include "V8Proxy.h"
42 #include <wtf/OwnPtr.h>
43 #include <wtf/PassOwnPtr.h>
44 #include <wtf/StdLibExtras.h>
45
46 namespace WebCore {
47
retrieveFrame(v8::Handle<v8::Context> context)48 static Frame* retrieveFrame(v8::Handle<v8::Context> context)
49 {
50 if (context.IsEmpty())
51 return 0;
52
53 // Test that context has associated global dom window object.
54 v8::Handle<v8::Object> global = context->Global();
55 if (global.IsEmpty())
56 return 0;
57
58 global = V8DOMWrapper::lookupDOMWrapper(V8DOMWindow::GetTemplate(), global);
59 if (global.IsEmpty())
60 return 0;
61
62 return V8Proxy::retrieveFrame(context);
63 }
64
shared()65 PageScriptDebugServer& PageScriptDebugServer::shared()
66 {
67 DEFINE_STATIC_LOCAL(PageScriptDebugServer, server, ());
68 return server;
69 }
70
PageScriptDebugServer()71 PageScriptDebugServer::PageScriptDebugServer()
72 : ScriptDebugServer()
73 , m_pausedPage(0)
74 , m_enabled(true)
75 {
76 }
77
addListener(ScriptDebugListener * listener,Page * page)78 void PageScriptDebugServer::addListener(ScriptDebugListener* listener, Page* page)
79 {
80 if (!m_enabled)
81 return;
82
83 V8Proxy* proxy = V8Proxy::retrieve(page->mainFrame());
84 if (!proxy)
85 return;
86
87 v8::HandleScope scope;
88 v8::Local<v8::Context> debuggerContext = v8::Debug::GetDebugContext();
89 v8::Context::Scope contextScope(debuggerContext);
90
91 if (!m_listenersMap.size()) {
92 ensureDebuggerScriptCompiled();
93 ASSERT(!m_debuggerScript.get()->IsUndefined());
94 v8::Debug::SetDebugEventListener2(&PageScriptDebugServer::v8DebugEventCallback, v8::External::New(this));
95 }
96 m_listenersMap.set(page, listener);
97
98 V8DOMWindowShell* shell = proxy->windowShell();
99 if (!shell->isContextInitialized())
100 return;
101 v8::Handle<v8::Context> context = shell->context();
102 v8::Handle<v8::Function> getScriptsFunction = v8::Local<v8::Function>::Cast(m_debuggerScript.get()->Get(v8::String::New("getScripts")));
103 v8::Handle<v8::Value> argv[] = { context->GetData() };
104 v8::Handle<v8::Value> value = getScriptsFunction->Call(m_debuggerScript.get(), 1, argv);
105 if (value.IsEmpty())
106 return;
107 ASSERT(!value->IsUndefined() && value->IsArray());
108 v8::Handle<v8::Array> scriptsArray = v8::Handle<v8::Array>::Cast(value);
109 for (unsigned i = 0; i < scriptsArray->Length(); ++i)
110 dispatchDidParseSource(listener, v8::Handle<v8::Object>::Cast(scriptsArray->Get(v8::Integer::New(i))));
111 }
112
removeListener(ScriptDebugListener * listener,Page * page)113 void PageScriptDebugServer::removeListener(ScriptDebugListener* listener, Page* page)
114 {
115 if (!m_listenersMap.contains(page))
116 return;
117
118 if (m_pausedPage == page)
119 continueProgram();
120
121 m_listenersMap.remove(page);
122
123 if (m_listenersMap.isEmpty())
124 v8::Debug::SetDebugEventListener(0);
125 // FIXME: Remove all breakpoints set by the agent.
126 }
127
setClientMessageLoop(PassOwnPtr<ClientMessageLoop> clientMessageLoop)128 void PageScriptDebugServer::setClientMessageLoop(PassOwnPtr<ClientMessageLoop> clientMessageLoop)
129 {
130 m_clientMessageLoop = clientMessageLoop;
131 }
132
getDebugListenerForContext(v8::Handle<v8::Context> context)133 ScriptDebugListener* PageScriptDebugServer::getDebugListenerForContext(v8::Handle<v8::Context> context)
134 {
135 v8::HandleScope scope;
136 Frame* frame = retrieveFrame(context);
137 if (!frame)
138 return 0;
139 return m_listenersMap.get(frame->page());
140 }
141
runMessageLoopOnPause(v8::Handle<v8::Context> context)142 void PageScriptDebugServer::runMessageLoopOnPause(v8::Handle<v8::Context> context)
143 {
144 v8::HandleScope scope;
145 Frame* frame = retrieveFrame(context);
146 m_pausedPage = frame->page();
147
148 // Wait for continue or step command.
149 m_clientMessageLoop->run(m_pausedPage);
150
151 // The listener may have been removed in the nested loop.
152 if (ScriptDebugListener* listener = m_listenersMap.get(m_pausedPage))
153 listener->didContinue();
154
155 m_pausedPage = 0;
156 }
157
quitMessageLoopOnPause()158 void PageScriptDebugServer::quitMessageLoopOnPause()
159 {
160 m_clientMessageLoop->quitNow();
161 }
162
163 } // namespace WebCore
164
165 #endif // ENABLE(JAVASCRIPT_DEBUGGER)
166