// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "config.h"

#include "base/compiler_specific.h"

MSVC_PUSH_WARNING_LEVEL(0);
#include "DOMWindow.h"
#include "FloatRect.h"
#include "InspectorController.h"
#include "Page.h"
#include "Settings.h"
#include <wtf/Vector.h>
MSVC_POP_WARNING();

#undef LOG
#include "base/logging.h"
#include "base/gfx/rect.h"
#include "base/string_util.h"
#include "webkit/api/public/WebRect.h"
#include "webkit/api/public/WebURL.h"
#include "webkit/api/public/WebURLRequest.h"
#include "webkit/glue/glue_util.h"
#include "webkit/glue/inspector_client_impl.h"
#include "webkit/glue/webdevtoolsagent_impl.h"
#include "webkit/glue/webkit_glue.h"
#include "webkit/glue/webview_impl.h"
#include "googleurl/src/gurl.h"
#include "net/base/net_util.h"

using namespace WebCore;

using WebKit::WebRect;
using WebKit::WebSize;
using WebKit::WebURLRequest;

static const float kDefaultInspectorXPos = 10;
static const float kDefaultInspectorYPos = 50;
static const float kDefaultInspectorHeight = 640;
static const float kDefaultInspectorWidth = 480;

WebInspectorClient::WebInspectorClient(WebViewImpl* webView)
  : inspected_web_view_(webView)
  , inspector_web_view_(0) {
  ASSERT(inspected_web_view_);
}

WebInspectorClient::~WebInspectorClient() {
}

void WebInspectorClient::inspectorDestroyed() {
  delete this;
}

Page* WebInspectorClient::createPage() {
  if (inspected_web_view_->GetWebDevToolsAgentImpl())
    return NULL;

  WebCore::Page* page;

  if (inspector_web_view_ != NULL) {
    page = inspector_web_view_->page();
    ASSERT(page != NULL);
    if (page != NULL)
      return page;
  }

  WebViewDelegate* delegate = inspected_web_view_->GetDelegate();
  if (!delegate)
    return NULL;
  inspector_web_view_ = static_cast<WebViewImpl*>(
      delegate->CreateWebView(inspected_web_view_, true, GURL()));
  if (!inspector_web_view_)
    return NULL;

  inspector_web_view_->main_frame()->LoadRequest(
      WebURLRequest(webkit_glue::GetInspectorURL()));

  page = inspector_web_view_->page();

  page->chrome()->setToolbarsVisible(false);
  page->chrome()->setStatusbarVisible(false);
  page->chrome()->setScrollbarsVisible(false);
  page->chrome()->setMenubarVisible(false);
  page->chrome()->setResizable(true);

  // Don't allow inspection of inspector.
  page->settings()->setDeveloperExtrasEnabled(false);
  page->settings()->setPrivateBrowsingEnabled(true);
  page->settings()->setPluginsEnabled(false);
  page->settings()->setJavaEnabled(false);

  FloatRect windowRect = page->chrome()->windowRect();
  FloatSize pageSize = page->chrome()->pageRect().size();
  windowRect.setX(kDefaultInspectorXPos);
  windowRect.setY(kDefaultInspectorYPos);
  windowRect.setWidth(kDefaultInspectorHeight);
  windowRect.setHeight(kDefaultInspectorWidth);
  page->chrome()->setWindowRect(windowRect);

  page->chrome()->show();

  return page;
}

void WebInspectorClient::showWindow() {
  if (inspected_web_view_->GetWebDevToolsAgentImpl())
    return;

  InspectorController* inspector = inspected_web_view_->page()->inspectorController();
  inspector->setWindowVisible(true);

  // Notify the webview delegate of how many resources we're inspecting.
  WebViewDelegate* d = inspected_web_view_->delegate();
  DCHECK(d);
}

void WebInspectorClient::closeWindow() {
  if (inspected_web_view_->GetWebDevToolsAgentImpl())
    return;

  inspector_web_view_ = NULL;

  hideHighlight();

  if (inspected_web_view_->page())
    inspected_web_view_->page()->inspectorController()->setWindowVisible(false);
}

bool WebInspectorClient::windowVisible() {
  if (inspected_web_view_->GetWebDevToolsAgentImpl())
    return false;

  if (inspector_web_view_ != NULL) {
    Page* page = inspector_web_view_->page();
    ASSERT(page != NULL);
    if (page != NULL)
      return true;
  }
  return false;
}

void WebInspectorClient::attachWindow() {
  // TODO(jackson): Implement this
}

void WebInspectorClient::detachWindow() {
  // TODO(jackson): Implement this
}

void WebInspectorClient::setAttachedWindowHeight(unsigned int height) {
  // TODO(dglazkov): Implement this
  NOTIMPLEMENTED();
}

static void invalidateNodeBoundingRect(WebViewImpl* web_view) {
  // TODO(ojan): http://b/1143996 Is it important to just invalidate the rect
  // of the node region given that this is not on a critical codepath?
  // In order to do so, we'd have to take scrolling into account.
  const WebSize& size = web_view->size();
  WebRect damaged_rect(0, 0, size.width, size.height);
  if (web_view->GetDelegate())
    web_view->GetDelegate()->DidInvalidateRect(web_view, damaged_rect);
}

void WebInspectorClient::highlight(Node* node) {
  // InspectorController does the actually tracking of the highlighted node
  // and the drawing of the highlight. Here we just make sure to invalidate
  // the rects of the old and new nodes.
  hideHighlight();
}

void WebInspectorClient::hideHighlight() {
  // TODO: Should be able to invalidate a smaller rect.
  invalidateNodeBoundingRect(inspected_web_view_);
}

void WebInspectorClient::inspectedURLChanged(const String& newURL) {
  // TODO(jackson): Implement this
}

String WebInspectorClient::localizedStringsURL() {
  NOTIMPLEMENTED();
  return String();
}

String WebInspectorClient::hiddenPanels() {
  // Enumerate tabs that are currently disabled.
  return "scripts,profiles,databases";
}

void WebInspectorClient::populateSetting(
    const String& key,
    InspectorController::Setting& setting) {
  LoadSettings();
  if (settings_->contains(key))
    setting = settings_->get(key);
}

void WebInspectorClient::storeSetting(
    const String& key,
    const InspectorController::Setting& setting) {
  LoadSettings();
  settings_->set(key, setting);
  SaveSettings();
}

void WebInspectorClient::removeSetting(const String& key) {
  LoadSettings();
  settings_->remove(key);
  SaveSettings();
}

void WebInspectorClient::LoadSettings() {
  if (settings_)
    return;

  settings_.set(new SettingsMap);
  String data = webkit_glue::StdWStringToString(
      inspected_web_view_->GetPreferences().inspector_settings);
  if (data.isEmpty())
    return;

  Vector<String> entries;
  data.split("\n", entries);
  for (Vector<String>::iterator it = entries.begin();
       it != entries.end(); ++it) {
    Vector<String> tokens;
    it->split(":", tokens);
    if (tokens.size() != 3)
      continue;

    String name = decodeURLEscapeSequences(tokens[0]);
    String type = tokens[1];
    InspectorController::Setting setting;
    bool ok = true;
    if (type == "string")
      setting.set(decodeURLEscapeSequences(tokens[2]));
    else if (type == "double")
      setting.set(tokens[2].toDouble(&ok));
    else if (type == "integer")
      setting.set(static_cast<long>(tokens[2].toInt(&ok)));
    else if (type == "boolean")
      setting.set(tokens[2] == "true");
    else
      continue;

    if (ok)
      settings_->set(name, setting);
  }
}

void WebInspectorClient::SaveSettings() {
  String data;
  for (SettingsMap::iterator it = settings_->begin(); it != settings_->end();
       ++it) {
    String entry;
    InspectorController::Setting value = it->second;
    String name = encodeWithURLEscapeSequences(it->first);
    switch (value.type()) {
      case InspectorController::Setting::StringType:
        entry = String::format(
            "%s:string:%s",
            name.utf8().data(),
            encodeWithURLEscapeSequences(value.string()).utf8().data());
        break;
      case InspectorController::Setting::DoubleType:
        entry = String::format(
            "%s:double:%f",
            name.utf8().data(),
            value.doubleValue());
        break;
      case InspectorController::Setting::IntegerType:
        entry = String::format(
            "%s:integer:%ld",
            name.utf8().data(),
            value.integerValue());
        break;
      case InspectorController::Setting::BooleanType:
        entry = String::format("%s:boolean:%s",
                               name.utf8().data(),
                               value.booleanValue() ? "true" : "false");
        break;
      case InspectorController::Setting::StringVectorType:
        NOTIMPLEMENTED();
        break;
      default:
        NOTREACHED();
        break;
    }
    data.append(entry);
    data.append("\n");
  }
  inspected_web_view_->delegate()->UpdateInspectorSettings(
      webkit_glue::StringToStdWString(data));
}