Source/core/inspector/InjectedScriptCanvasModule.cpp

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 * 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.
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 * in the documentation and/or other materials provided with the
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include "config.h"
#include "core/inspector/InjectedScriptCanvasModule.h"

#include "bindings/core/v8/ScriptFunctionCall.h"
#include "bindings/core/v8/ScriptValue.h"
#include "public/platform/Platform.h"
#include "public/platform/WebData.h"

using blink::TypeBuilder::Array;
using blink::TypeBuilder::Canvas::ResourceId;
using blink::TypeBuilder::Canvas::ResourceState;
using blink::TypeBuilder::Canvas::TraceLog;
using blink::TypeBuilder::Canvas::TraceLogId;
using blink::TypeBuilder::Runtime::RemoteObject;

namespace blink {

InjectedScriptCanvasModule::InjectedScriptCanvasModule()
    : InjectedScriptModule("InjectedScriptCanvasModule")
{
}

InjectedScriptCanvasModule InjectedScriptCanvasModule::moduleForState(InjectedScriptManager* injectedScriptManager, ScriptState* scriptState)
{
    InjectedScriptCanvasModule result;
    result.ensureInjected(injectedScriptManager, scriptState);
    return result;
}

String InjectedScriptCanvasModule::source() const
{
    const blink::WebData& canvasModuleSourceResource = blink::Platform::current()->loadResource("InjectedScriptCanvasModuleSource.js");
    return String(canvasModuleSourceResource.data(), canvasModuleSourceResource.size());
}

ScriptValue InjectedScriptCanvasModule::wrapCanvas2DContext(const ScriptValue& context)
{
    return callWrapContextFunction("wrapCanvas2DContext", context);
}

ScriptValue InjectedScriptCanvasModule::wrapWebGLContext(const ScriptValue& glContext)
{
    return callWrapContextFunction("wrapWebGLContext", glContext);
}

ScriptValue InjectedScriptCanvasModule::callWrapContextFunction(const String& functionName, const ScriptValue& context)
{
    ScriptFunctionCall function(injectedScriptObject(), functionName);
    function.appendArgument(context);
    bool hadException = false;
    ScriptValue resultValue = callFunctionWithEvalEnabled(function, hadException);
    if (hadException || resultValue.isEmpty() || !resultValue.isObject()) {
        ASSERT_NOT_REACHED();
        return ScriptValue();
    }
    return resultValue;
}

void InjectedScriptCanvasModule::markFrameEnd()
{
    ScriptFunctionCall function(injectedScriptObject(), "markFrameEnd");
    RefPtr<JSONValue> resultValue;
    makeCall(function, &resultValue);
    ASSERT(resultValue);
}

void InjectedScriptCanvasModule::captureFrame(ErrorString* errorString, TraceLogId* traceLogId)
{
    callStartCapturingFunction("captureFrame", errorString, traceLogId);
}

void InjectedScriptCanvasModule::startCapturing(ErrorString* errorString, TraceLogId* traceLogId)
{
    callStartCapturingFunction("startCapturing", errorString, traceLogId);
}

void InjectedScriptCanvasModule::callStartCapturingFunction(const String& functionName, ErrorString* errorString, TraceLogId* traceLogId)
{
    ScriptFunctionCall function(injectedScriptObject(), functionName);
    RefPtr<JSONValue> resultValue;
    makeCall(function, &resultValue);
    if (!resultValue || resultValue->type() != JSONValue::TypeString || !resultValue->asString(traceLogId))
        *errorString = "Internal error: " + functionName;
}

void InjectedScriptCanvasModule::stopCapturing(ErrorString* errorString, const TraceLogId& traceLogId)
{
    callVoidFunctionWithTraceLogIdArgument("stopCapturing", errorString, traceLogId);
}

void InjectedScriptCanvasModule::dropTraceLog(ErrorString* errorString, const TraceLogId& traceLogId)
{
    callVoidFunctionWithTraceLogIdArgument("dropTraceLog", errorString, traceLogId);
}

void InjectedScriptCanvasModule::callVoidFunctionWithTraceLogIdArgument(const String& functionName, ErrorString* errorString, const TraceLogId& traceLogId)
{
    ScriptFunctionCall function(injectedScriptObject(), functionName);
    function.appendArgument(traceLogId);
    bool hadException = false;
    callFunctionWithEvalEnabled(function, hadException);
    ASSERT(!hadException);
    if (hadException)
        *errorString = "Internal error: " + functionName;
}

void InjectedScriptCanvasModule::traceLog(ErrorString* errorString, const TraceLogId& traceLogId, const int* startOffset, const int* maxLength, RefPtr<TraceLog>* traceLog)
{
    ScriptFunctionCall function(injectedScriptObject(), "traceLog");
    function.appendArgument(traceLogId);
    if (startOffset)
        function.appendArgument(*startOffset);
    if (maxLength)
        function.appendArgument(*maxLength);
    RefPtr<JSONValue> resultValue;
    makeCall(function, &resultValue);
    if (!resultValue || resultValue->type() != JSONValue::TypeObject) {
        if (!resultValue->asString(errorString))
            *errorString = "Internal error: traceLog";
        return;
    }
    *traceLog = TraceLog::runtimeCast(resultValue);
}

void InjectedScriptCanvasModule::replayTraceLog(ErrorString* errorString, const TraceLogId& traceLogId, int stepNo, RefPtr<ResourceState>* result, double* replayTime)
{
    ScriptFunctionCall function(injectedScriptObject(), "replayTraceLog");
    function.appendArgument(traceLogId);
    function.appendArgument(stepNo);
    RefPtr<JSONValue> resultValue;
    makeCall(function, &resultValue);
    if (!resultValue || resultValue->type() != JSONValue::TypeObject) {
        if (!resultValue->asString(errorString))
            *errorString = "Internal error: replayTraceLog";
        return;
    }
    RefPtr<JSONObject> resultObject = resultValue->asObject();
    RefPtr<JSONObject> resourceStateObject = resultObject->getObject("resourceState");
    if (!resourceStateObject) {
        *errorString = "Internal error: replayTraceLog: no resourceState";
        return;
    }
    *result = ResourceState::runtimeCast(resourceStateObject);
    if (!resultObject->getNumber("replayTime", replayTime))
        *errorString = "Internal error: replayTraceLog: no replayTime";
}

void InjectedScriptCanvasModule::resourceState(ErrorString* errorString, const TraceLogId& traceLogId, const ResourceId& resourceId, RefPtr<ResourceState>* result)
{
    ScriptFunctionCall function(injectedScriptObject(), "resourceState");
    function.appendArgument(traceLogId);
    function.appendArgument(resourceId);
    RefPtr<JSONValue> resultValue;
    makeCall(function, &resultValue);
    if (!resultValue || resultValue->type() != JSONValue::TypeObject) {
        if (!resultValue->asString(errorString))
            *errorString = "Internal error: resourceState";
        return;
    }
    *result = ResourceState::runtimeCast(resultValue);
}

void InjectedScriptCanvasModule::evaluateTraceLogCallArgument(ErrorString* errorString, const TraceLogId& traceLogId, int callIndex, int argumentIndex, const String& objectGroup, RefPtr<RemoteObject>* result, RefPtr<ResourceState>* resourceState)
{
    ScriptFunctionCall function(injectedScriptObject(), "evaluateTraceLogCallArgument");
    function.appendArgument(traceLogId);
    function.appendArgument(callIndex);
    function.appendArgument(argumentIndex);
    function.appendArgument(objectGroup);
    RefPtr<JSONValue> resultValue;
    makeCall(function, &resultValue);
    if (!resultValue || resultValue->type() != JSONValue::TypeObject) {
        if (!resultValue->asString(errorString))
            *errorString = "Internal error: evaluateTraceLogCallArgument";
        return;
    }
    RefPtr<JSONObject> resultObject = resultValue->asObject();
    RefPtr<JSONObject> remoteObject = resultObject->getObject("result");
    if (remoteObject)
        *result = RemoteObject::runtimeCast(remoteObject);
    RefPtr<JSONObject> resourceStateObject = resultObject->getObject("resourceState");
    if (resourceStateObject)
        *resourceState = ResourceState::runtimeCast(resourceStateObject);
    if (!remoteObject && !resourceStateObject)
        *errorString = "Internal error: no result and no resource state";
}

} // namespace blink