third_party/WebKit/WebCore/bindings/v8/custom/V8LazyEventListener.cpp - Issue 46097: WebKit merge 41660:41709 (WebKit side)....

Unified Diff: third_party/WebKit/WebCore/bindings/v8/custom/V8LazyEventListener.cpp

Issue 46097: WebKit merge 41660:41709 (WebKit side).... (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/

Patch Set: Created 11 years, 9 months ago

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===================================================================

--- third_party/WebKit/WebCore/bindings/v8/custom/V8LazyEventListener.cpp (revision 11711)

+++ third_party/WebKit/WebCore/bindings/v8/custom/V8LazyEventListener.cpp (working copy)

@@ -1,196 +0,0 @@

-/*

- *

- * Redistribution and use in source and binary forms, with or without

- * modification, are permitted provided that the following conditions are

- * met:

- *

- * * Redistributions of source code must retain the above copyright

- * notice, this list of conditions and the following disclaimer.

- * * Redistributions in binary form must reproduce the above

- * copyright notice, this list of conditions and the following disclaimer

- * in the documentation and/or other materials provided with the

- * distribution.

- * * Neither the name of Google Inc. nor the names of its

- * contributors may be used to endorse or promote products derived from

- * this software without specific prior written permission.

- *

- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

- */

-#include "config.h"

-#include "V8LazyEventListener.h"

-#include "Frame.h"

-#include "V8Binding.h"

-#include "V8Proxy.h"

-namespace WebCore {

-V8LazyEventListener::V8LazyEventListener(Frame *frame, const String& code, const String& functionName)

- : V8AbstractEventListener(frame, true)

- , m_code(code)

- , m_functionName(functionName)

- , m_compiled(false)

- , m_wrappedFunctionCompiled(false)

-V8LazyEventListener::~V8LazyEventListener()

- disposeListenerObject();

- // Dispose wrapped function

- if (!m_wrappedFunction.IsEmpty()) {

-#ifndef NDEBUG

- V8Proxy::UnregisterGlobalHandle(this, m_wrappedFunction);

-#endif

- m_wrappedFunction.Dispose();

- m_wrappedFunction.Clear();

- }

-v8::Local<v8::Function> V8LazyEventListener::getListenerFunction()

- if (m_compiled) {

- ASSERT(m_listener.IsEmpty() || m_listener->IsFunction());

- return m_listener.IsEmpty() ? v8::Local<v8::Function>() : v8::Local<v8::Function>::New(v8::Persistent<v8::Function>::Cast(m_listener));

- }

- m_compiled = true;

- ASSERT(m_frame);

- {

- // Switch to the context of m_frame.

- v8::HandleScope handleScope;

- // Use the outer scope to hold context.

- v8::Handle<v8::Context> context = V8Proxy::GetContext(m_frame);

- // Bail out if we could not get the context.

- if (context.IsEmpty())

- return v8::Local<v8::Function>();

- v8::Context::Scope scope(context);

- // Wrap function around the event code. The parenthesis around the function are needed so that evaluating the code yields

- // the function value. Without the parenthesis the function value is thrown away.

- // Make it an anonymous function to avoid name conflict for cases like

- // <body onload='onload()'>

- // <script> function onload() { alert('hi'); } </script>.

- // Set function name to function object instead.

- // See issue 944690.

- //

- // The ECMAScript spec says (very obliquely) that the parameter to an event handler is named "evt".

- String code = "(function (evt) {\n";

- code.append(m_code);

- code.append("})");

- v8::Handle<v8::String> codeExternalString = v8ExternalString(code);

- v8::Handle<v8::Script> script = V8Proxy::CompileScript(codeExternalString, m_frame->document()->url(), m_lineNumber - 1);

- if (!script.IsEmpty()) {

- V8Proxy* proxy = V8Proxy::retrieve(m_frame);

- ASSERT(proxy);

- v8::Local<v8::Value> value = proxy->RunScript(script, false);

- if (!value.IsEmpty()) {

- ASSERT(value->IsFunction());

- v8::Local<v8::Function> listenerFunction = v8::Local<v8::Function>::Cast(value);

- listenerFunction->SetName(v8::String::New(FromWebCoreString(m_functionName), m_functionName.length()));

- m_listener = v8::Persistent<v8::Function>::New(listenerFunction);

-#ifndef NDEBUG

- V8Proxy::RegisterGlobalHandle(EVENT_LISTENER, this, m_listener);

-#endif

- }

- ASSERT(m_listener.IsEmpty() || m_listener->IsFunction());

- return m_listener.IsEmpty() ? v8::Local<v8::Function>() : v8::Local<v8::Function>::New(v8::Persistent<v8::Function>::Cast(m_listener));

-v8::Local<v8::Value> V8LazyEventListener::callListenerFunction(v8::Handle<v8::Value> jsEvent, Event* event, bool isWindowEvent)

- v8::Local<v8::Function> handlerFunction = getWrappedListenerFunction();

- v8::Local<v8::Object> receiver = getReceiverObject(event, isWindowEvent);

- if (handlerFunction.IsEmpty() || receiver.IsEmpty())

- return v8::Local<v8::Value>();

- v8::Handle<v8::Value> parameters[1] = { jsEvent };

- V8Proxy* proxy = V8Proxy::retrieve(m_frame);

- return proxy->CallFunction(handlerFunction, receiver, 1, parameters);

-v8::Local<v8::Function> V8LazyEventListener::getWrappedListenerFunction()

- if (m_wrappedFunctionCompiled) {

- ASSERT(m_wrappedFunction.IsEmpty() || m_wrappedFunction->IsFunction());

- return m_wrappedFunction.IsEmpty() ? v8::Local<v8::Function>() : v8::Local<v8::Function>::New(m_wrappedFunction);

- }

- m_wrappedFunctionCompiled = true;

- {

- // Switch to the context of m_frame.

- v8::HandleScope handleScope;

- // Use the outer scope to hold context.

- v8::Handle<v8::Context> context = V8Proxy::GetContext(m_frame);

- // Bail out if we cannot get the context.

- if (context.IsEmpty())

- return v8::Local<v8::Function>();

- v8::Context::Scope scope(context);

- // FIXME: cache the wrapper function.

- String code = "(function (evt) {\n";

- // Nodes other than the document object, when executing inline event handlers push document, form, and the target node on the scope chain.

- // We do this by using 'with' statement.

- // See chrome/fast/forms/form-action.html

- // chrome/fast/forms/selected-index-value.html

- // base/fast/overflow/onscroll-layer-self-destruct.html

- code.append(" with (this.ownerDocument ? this.ownerDocument : {}) {\n");

- code.append(" with (this.form ? this.form : {}) {\n");

- code.append(" with (this) {\n");

- code.append(" return (function(evt){");

- code.append(m_code);

- code.append("}).call(this, evt);\n");

- code.append(" }\n");

- code.append("})");

- v8::Handle<v8::String> codeExternalString = v8ExternalString(code);

- v8::Handle<v8::Script> script = V8Proxy::CompileScript(codeExternalString, m_frame->document()->url(), m_lineNumber - 4);

- if (!script.IsEmpty()) {

- V8Proxy* proxy = V8Proxy::retrieve(m_frame);

- ASSERT(proxy);

- v8::Local<v8::Value> value = proxy->RunScript(script, false);

- if (!value.IsEmpty()) {

- ASSERT(value->IsFunction());

- m_wrappedFunction = v8::Persistent<v8::Function>::New(v8::Local<v8::Function>::Cast(value));

-#ifndef NDEBUG

- V8Proxy::RegisterGlobalHandle(EVENT_LISTENER, this, m_wrappedFunction);

-#endif

- m_wrappedFunction->SetName(v8::String::New(fromWebCoreString(m_functionName), m_functionName.length()));

- }

- return v8::Local<v8::Function>::New(m_wrappedFunction);

-} // namespace WebCore