// Copyright (c) 2010 The Chromium Embedded Framework Authors.
// Portions 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.

#import <Cocoa/Cocoa.h>

#include "libcef/cef_context.h"
#include "libcef/browser_impl.h"
#include "libcef/browser_settings.h"
#include "libcef/browser_webview_mac.h"

#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebRect.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebSize.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
#include "webkit/glue/webpreferences.h"

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

void CefBrowserImpl::ParentWindowWillClose() {
  // TODO(port): Implement this method if necessary.
}

CefWindowHandle CefBrowserImpl::GetWindowHandle() {
  AutoLock lock_scope(this);
  return window_info_.m_View;
}

bool CefBrowserImpl::IsWindowRenderingDisabled() {
  return (window_info_.m_bWindowRenderingDisabled ? true : false);
}

gfx::NativeView CefBrowserImpl::UIT_GetMainWndHandle() {
  REQUIRE_UIT();
  return window_info_.m_bWindowRenderingDisabled ?
      window_info_.m_ParentView : window_info_.m_View;
}

void CefBrowserImpl::UIT_ClearMainWndHandle() {
  REQUIRE_UIT();
  if (!window_info_.m_bWindowRenderingDisabled)
    window_info_.m_View = NULL;
}

bool CefBrowserImpl::UIT_CreateBrowser(const CefString& url) {
  REQUIRE_UIT();
  Lock();

  // Add a reference that will be released in UIT_DestroyBrowser().
  AddRef();

  // Add the new browser to the list maintained by the context
  _Context->AddBrowser(this);

  if (!settings_.developer_tools_disabled)
    dev_tools_agent_.reset(new BrowserDevToolsAgent());

  NSWindow* newWnd = nil;

  NSView* parentView = window_info_.m_ParentView;
  gfx::Rect contentRect(window_info_.m_x, window_info_.m_y,
                        window_info_.m_nWidth, window_info_.m_nHeight);
  if (!window_info_.m_bWindowRenderingDisabled) {
    if (parentView == nil) {
      // Create a new window.
      NSRect screen_rect = [[NSScreen mainScreen] visibleFrame];
      NSRect window_rect = {{window_info_.m_x,
                             screen_rect.size.height - window_info_.m_y},
                            {window_info_.m_nWidth, window_info_.m_nHeight}};
      if (window_rect.size.width == 0)
        window_rect.size.width = 750;
      if (window_rect.size.height == 0)
        window_rect.size.height = 750;
      contentRect.SetRect(0, 0, window_rect.size.width,
                          window_rect.size.height);

      newWnd = [[NSWindow alloc]
                initWithContentRect:window_rect
                styleMask:(NSTitledWindowMask |
                           NSClosableWindowMask |
                           NSMiniaturizableWindowMask |
                           NSResizableWindowMask |
                           NSUnifiedTitleAndToolbarWindowMask )
                backing:NSBackingStoreBuffered
                defer:NO];
      parentView = [newWnd contentView];
      window_info_.m_ParentView = parentView;
    }
  } else {
    // Create a new paint delegate.
    paint_delegate_.reset(new PaintDelegate(this));
  }

  WebPreferences prefs;
  BrowserToWebSettings(settings_, prefs);

  // Create the webview host object
  webviewhost_.reset(
      WebViewHost::Create(parentView, contentRect, delegate_.get(),
                          paint_delegate_.get(), dev_tools_agent_.get(),
                          prefs));

  if (window_info_.m_bTransparentPainting)
    webviewhost_->webview()->setIsTransparent(true);

  if (!settings_.developer_tools_disabled)
    dev_tools_agent_->SetWebView(webviewhost_->webview());

  webviewhost_->SetFrameRate(settings_.animation_frame_rate);

  BrowserWebView* browserView = (BrowserWebView*)webviewhost_->view_handle();
  browserView.browser = this;
  window_info_.m_View = browserView;

  if (!window_info_.m_bWindowRenderingDisabled) {
    if (!settings_.drag_drop_disabled)
      [browserView registerDragDrop];
  }

  Unlock();

  if (newWnd != nil && !window_info_.m_bHidden) {
    // Show the window.
    [newWnd makeKeyAndOrderFront: nil];
  }

  if (client_.get()) {
    CefRefPtr<CefLifeSpanHandler> handler = client_->GetLifeSpanHandler();
    if(handler.get()) {
      // Notify the handler that we're done creating the new window
      handler->OnAfterCreated(this);
    }
  }

  if(url.size() > 0)
    UIT_LoadURL(GetMainFrame(), url);

  return true;
}

void CefBrowserImpl::UIT_SetFocus(WebWidgetHost* host, bool enable) {
  REQUIRE_UIT();
  if (!host)
    return;

  BrowserWebView* browserView = (BrowserWebView*)host->view_handle();
  if (!browserView)
    return;

  if (enable) {
    // Guard against calling OnSetFocus twice.
    browserView.in_setfocus = true;
    [[browserView window] makeFirstResponder:browserView];
    browserView.in_setfocus = false;
  }
}

bool CefBrowserImpl::UIT_ViewDocumentString(WebKit::WebFrame* frame) {
  REQUIRE_UIT();

  char sztmp[L_tmpnam+4];
  if (tmpnam(sztmp)) {
    strcat(sztmp, ".txt");

    FILE* fp = fopen(sztmp, "wb");
    if (fp) {
      std::string markup = frame->contentAsMarkup().utf8();
      fwrite(markup.c_str(), 1, markup.size(), fp);
      fclose(fp);

      char szopen[L_tmpnam + 14];
      snprintf(szopen, sizeof(szopen), "open -t \"%s\"", sztmp);
      return (system(szopen) >= 0);
    }
  }
  return false;
}

void CefBrowserImpl::UIT_PrintPage(int page_number, int total_pages,
                                   const gfx::Size& canvas_size,
                                   WebKit::WebFrame* frame) {
  REQUIRE_UIT();

  // TODO(port): Add implementation.
  NOTIMPLEMENTED();
}

void CefBrowserImpl::UIT_PrintPages(WebKit::WebFrame* frame) {
  REQUIRE_UIT();

  // TODO(port): Add implementation.
  NOTIMPLEMENTED();
}

int CefBrowserImpl::UIT_GetPagesCount(WebKit::WebFrame* frame) {
  REQUIRE_UIT();

  // TODO(port): Add implementation.
  NOTIMPLEMENTED();
  return 0;
}

// static
void CefBrowserImpl::UIT_CloseView(gfx::NativeView view) {
  [[view window] performSelector:@selector(performClose:)
                      withObject:nil
                      afterDelay:0];
}

// static
bool CefBrowserImpl::UIT_IsViewVisible(gfx::NativeView view) {
  return [[view window] isVisible];
}