/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
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 * 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
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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#include "TextInputController.h"

#include "TestCommon.h"
#include "public/platform/WebString.h"
#include "public/platform/WebVector.h"
#include "public/web/WebBindings.h"
#include "public/web/WebCompositionUnderline.h"
#include "public/web/WebFrame.h"
#include "public/web/WebInputEvent.h"
#include "public/web/WebRange.h"
#include "public/web/WebView.h"
#include <string>

using namespace blink;
using namespace std;

namespace WebTestRunner {

TextInputController::TextInputController()
{
    bindMethod("doCommand", &TextInputController::doCommand);
    bindMethod("firstRectForCharacterRange", &TextInputController::firstRectForCharacterRange);
    bindMethod("hasMarkedText", &TextInputController::hasMarkedText);
    bindMethod("insertText", &TextInputController::insertText);
    bindMethod("markedRange", &TextInputController::markedRange);
    bindMethod("selectedRange", &TextInputController::selectedRange);
    bindMethod("setMarkedText", &TextInputController::setMarkedText);
    bindMethod("unmarkText", &TextInputController::unmarkText);
    bindMethod("setComposition", &TextInputController::setComposition);
}

void TextInputController::insertText(const CppArgumentList& arguments, CppVariant* result)
{
    result->setNull();

    if (arguments.size() < 1 || !arguments[0].isString())
        return;

    m_webView->confirmComposition(WebString::fromUTF8(arguments[0].toString()));
}

void TextInputController::doCommand(const CppArgumentList& arguments, CppVariant* result)
{
    result->setNull();

    WebFrame* mainFrame = m_webView->mainFrame();
    if (!mainFrame)
        return;

    if (arguments.size() >= 1 && arguments[0].isString())
        mainFrame->executeCommand(WebString::fromUTF8(arguments[0].toString()));
}

void TextInputController::setMarkedText(const CppArgumentList& arguments, CppVariant* result)
{
    result->setNull();

    if (arguments.size() < 3 || !arguments[0].isString()
        || !arguments[1].isNumber() || !arguments[2].isNumber())
        return;

    WebString text(WebString::fromUTF8(arguments[0].toString()));
    int start = arguments[1].toInt32();
    int length = arguments[2].toInt32();

    // Split underline into up to 3 elements (before, selection, and after).
    vector<WebCompositionUnderline> underlines;
    WebCompositionUnderline underline;
    if (!start) {
        underline.endOffset = length;
    } else {
        underline.endOffset = start;
        underlines.push_back(underline);
        underline.startOffset = start;
        underline.endOffset = start + length;
    }
    underline.thick = true;
    underlines.push_back(underline);
    if (start + length < static_cast<int>(text.length())) {
        underline.startOffset = underline.endOffset;
        underline.endOffset = text.length();
        underline.thick = false;
        underlines.push_back(underline);
    }

    m_webView->setComposition(text, underlines, start, start + length);
}

void TextInputController::unmarkText(const CppArgumentList&, CppVariant* result)
{
    result->setNull();

    m_webView->confirmComposition();
}

void TextInputController::hasMarkedText(const CppArgumentList&, CppVariant* result)
{
    result->setNull();

    WebFrame* mainFrame = m_webView->mainFrame();
    if (!mainFrame)
        return;

    result->set(mainFrame->hasMarkedText());
}

void TextInputController::markedRange(const CppArgumentList&, CppVariant* result)
{
    result->setNull();

    WebFrame* mainFrame = m_webView->mainFrame();
    if (!mainFrame)
        return;

    WebRange range = mainFrame->markedRange();
    vector<int> intArray(2);
    intArray[0] = range.startOffset();
    intArray[1] = range.endOffset();

    NPObject* resultArray = WebBindings::makeIntArray(intArray);
    result->set(resultArray);
    WebBindings::releaseObject(resultArray);
}

void TextInputController::selectedRange(const CppArgumentList&, CppVariant* result)
{
    result->setNull();

    WebFrame* mainFrame = m_webView->mainFrame();
    if (!mainFrame)
        return;

    WebRange range = mainFrame->selectionRange();
    vector<int> intArray(2);
    intArray[0] = range.startOffset();
    intArray[1] = range.endOffset();

    NPObject* resultArray = WebBindings::makeIntArray(intArray);
    result->set(resultArray);
    WebBindings::releaseObject(resultArray);
}

void TextInputController::firstRectForCharacterRange(const CppArgumentList& arguments, CppVariant* result)
{
    result->setNull();

    WebFrame* frame = m_webView->focusedFrame();
    if (!frame)
        return;

    if (arguments.size() < 2 || !arguments[0].isNumber() || !arguments[1].isNumber())
        return;

    WebRect rect;
    if (!frame->firstRectForCharacterRange(arguments[0].toInt32(), arguments[1].toInt32(), rect))
        return;

    vector<int> intArray(4);
    intArray[0] = rect.x;
    intArray[1] = rect.y;
    intArray[2] = rect.width;
    intArray[3] = rect.height;

    NPObject* resultArray = WebBindings::makeIntArray(intArray);
    result->set(resultArray);
    WebBindings::releaseObject(resultArray);
}

void TextInputController::setComposition(const CppArgumentList& arguments, CppVariant* result)
{
    result->setNull();

    if (arguments.size() < 1)
        return;

    // Sends a keydown event with key code = 0xE5 to emulate input method behavior.
    WebKeyboardEvent keyDown;
    keyDown.type = WebInputEvent::RawKeyDown;
    keyDown.modifiers = 0;
    keyDown.windowsKeyCode = 0xE5; // VKEY_PROCESSKEY
    keyDown.setKeyIdentifierFromWindowsKeyCode();
    m_webView->handleInputEvent(keyDown);

    WebVector<WebCompositionUnderline> underlines;
    WebString text(WebString::fromUTF8(arguments[0].toString()));
    m_webView->setComposition(text, underlines, 0, text.length());
}

}