// Copyright 2008, Google Inc.
// All rights reserved.
//
// 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 "chrome/browser/debugger/debugger_window.h"

#include "base/logging.h"
#include "base/string_util.h"
#include "base/json_writer.h"
#include "base/values.h"
#include "chrome/browser/browser_list.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/debugger/resources/debugger_resources.h"
#include "chrome/browser/debugger/debugger_shell.h"
#include "chrome/browser/debugger/debugger_view.h"
#include "chrome/browser/debugger/debugger_wrapper.h"
#include "chrome/browser/dom_ui/chrome_url_data_manager.h"
#include "chrome/browser/render_view_host.h"
#include "chrome/browser/standard_layout.h"
#include "chrome/browser/tab_contents.h"
#include "chrome/browser/tab_contents_container_view.h"
#include "chrome/browser/view_ids.h"
#include "chrome/browser/web_contents.h"
#include "chrome/common/gfx/chrome_canvas.h"
#include "chrome/common/resource_bundle.h"
#include "chrome/views/grid_layout.h"
#include "chrome/views/native_scroll_bar.h"
#include "chrome/views/scroll_view.h"
#include "chrome/views/text_field.h"
#include "chrome/views/view.h"


DebuggerView::DebuggerView() : output_ready_(false) {
  web_container_ = new TabContentsContainerView();
  AddChildView(web_container_);
}

DebuggerView::~DebuggerView() {
}

void DebuggerView::GetPreferredSize(CSize* out) {
  out->cx = 700;
  out->cy = 400;
}

void DebuggerView::Layout() {
  web_container_->SetBounds(0, 0, GetWidth(), GetHeight());
}

void DebuggerView::DidChangeBounds(const CRect& previous,
                                   const CRect& current) {
  Layout();
}

void DebuggerView::ViewHierarchyChanged(bool is_add,
                                        ChromeViews::View* parent,
                                        ChromeViews::View* child) {
  if (is_add && child == this) {
    DCHECK(GetViewContainer());
    OnInit();
  }
}

void DebuggerView::Paint(ChromeCanvas* canvas) {
#ifndef NDEBUG
  SkPaint paint;
  canvas->FillRectInt(SK_ColorCYAN, bounds_.left, bounds_.top,
                      bounds_.Width(), bounds_.Height());
#endif
}

void DebuggerView::SetOutputViewReady() {
  output_ready_ = true;
  for (std::vector<std::wstring>::iterator i = pending_output_.begin();
       i != pending_output_.end(); ++i) {
    Output(*i);
  }
  pending_output_.clear();
}

void DebuggerView::Output(const std::string& out) {
  Output(UTF8ToWide(out));
}

void DebuggerView::Output(const std::wstring& out) {
  if (!output_ready_) {
    pending_output_.push_back(out);
    return;
  }
  Value* str_value = Value::CreateStringValue(out);
  std::string json;
  JSONWriter::Write(str_value, false, &json);
  const std::string js = StringPrintf("appendText(%s)", json.c_str());
  ExecuteJavascript(js);
}

void DebuggerView::OnInit() {
  // We can't create the WebContents until we've actually been put into a real
  // view hierarchy somewhere.
  Profile* profile = BrowserList::GetLastActive()->profile();
  TabContents* tc = TabContents::CreateWithType(TAB_CONTENTS_DEBUGGER, 
      ::GetDesktopWindow(), profile, NULL);
  web_contents_ = tc->AsWebContents();
  web_contents_->SetupController(profile);
  web_contents_->set_delegate(this);
  web_container_->SetTabContents(web_contents_);
  web_contents_->render_view_host()->AllowDOMUIBindings();

  GURL contents("chrome-resource://debugger/");
  web_contents_->controller()->LoadURL(contents, PageTransition::START_PAGE);
}

void DebuggerView::OnShow() {
  web_contents_->Focus();
  if (output_ready_)
    ExecuteJavascript("focusOnCommandLine()");
}

void DebuggerView::OnClose() {
  web_container_->SetTabContents(NULL);
  web_contents_->CloseContents();
}

void DebuggerView::SetDebuggerBreak(bool is_broken) {
  const std::string js =
      StringPrintf("setDebuggerBreak(%s)", is_broken ? "true" : "false");
  ExecuteJavascript(js);
}

void DebuggerView::OpenURLFromTab(TabContents* source,
                                  const GURL& url,
                                  WindowOpenDisposition disposition,
                                  PageTransition::Type transition,
                                  const std::string& override_encoding) {
  BrowserList::GetLastActive()->OpenURL(url, disposition, transition);
}

void DebuggerView::ExecuteJavascript(const std::string& js) {
  const std::string url = StringPrintf("javascript:void(%s)", js.c_str());
  web_contents_->render_view_host()->ExecuteJavascriptInWebFrame(L"", 
      UTF8ToWide(url));
}

void DebuggerView::LoadingStateChanged(TabContents* source) {
  if (!source->is_loading())
    SetOutputViewReady();
}