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// Copyright (c) 2008-2009 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.
// This file contains the implementation of BrowserWebViewDelegate, which serves
// as the WebViewDelegate for the BrowserWebHost. The host is expected to
// have initialized a MessageLoop before these methods are called.
#include "precompiled_libcef.h"
#include "browser_webview_delegate.h"
#include "browser_drag_delegate.h"
#include "browser_drop_delegate.h"
#include "browser_navigation_controller.h"
#include "browser_impl.h"
#include "context.h"
#include <objidl.h>
#include <shlobj.h>
#include <shlwapi.h>
#include "base/gfx/gdi_util.h"
#include "base/gfx/native_widget_types.h"
#include "base/gfx/point.h"
#include "base/message_loop.h"
#include "base/string_util.h"
#include "base/trace_event.h"
#include "net/base/net_errors.h"
#include "webkit/api/public/WebRect.h"
#include "webkit/glue/webdatasource.h"
#include "webkit/glue/webdropdata.h"
#include "webkit/glue/weberror.h"
#include "webkit/glue/webframe.h"
#include "webkit/glue/webpreferences.h"
#include "webkit/glue/webplugin.h"
#include "webkit/glue/weburlrequest.h"
#include "webkit/glue/webkit_glue.h"
#include "webkit/glue/webview.h"
#include "webkit/glue/plugins/plugin_list.h"
#include "webkit/glue/plugins/webplugin_delegate_impl.h"
#include "webkit/glue/window_open_disposition.h"
using WebKit::WebRect;
// WebViewDelegate -----------------------------------------------------------
WebPluginDelegate* BrowserWebViewDelegate::CreatePluginDelegate(
WebView* webview,
const GURL& url,
const std::string& mime_type,
const std::string& clsid,
std::string* actual_mime_type) {
HWND hwnd = gfx::NativeViewFromId(GetContainingView(webview));
if (!hwnd)
return NULL;
bool allow_wildcard = true;
// first, look for plugins using the normal plugin list
WebPluginInfo info;
if (NPAPI::PluginList::Singleton()->GetPluginInfo(url, mime_type, clsid,
allow_wildcard, &info,
actual_mime_type)) {
if (actual_mime_type && !actual_mime_type->empty())
return WebPluginDelegateImpl::Create(info.path, *actual_mime_type, hwnd);
else
return WebPluginDelegateImpl::Create(info.path, mime_type, hwnd);
}
return NULL;
}
void BrowserWebViewDelegate::Show(WebWidget* webwidget, WindowOpenDisposition) {
if (webwidget == browser_->GetWebView()) {
ShowWindow(browser_->GetMainWndHandle(), SW_SHOW);
UpdateWindow(browser_->GetMainWndHandle());
} else if (webwidget == browser_->GetPopup()) {
ShowWindow(browser_->GetPopupWndHandle(), SW_SHOW);
UpdateWindow(browser_->GetPopupWndHandle());
}
}
void BrowserWebViewDelegate::ShowAsPopupWithItems(
WebWidget* webwidget,
const WebRect& bounds,
int item_height,
int selected_index,
const std::vector<WebMenuItem>& items) {
NOTREACHED();
}
void BrowserWebViewDelegate::CloseWidgetSoon(WebWidget* webwidget) {
if (webwidget == browser_->GetWebView()) {
PostMessage(browser_->GetMainWndHandle(), WM_CLOSE, 0, 0);
} else if (webwidget == browser_->GetPopup()) {
browser_->UIT_ClosePopupWidget();
}
}
void BrowserWebViewDelegate::SetCursor(WebWidget* webwidget,
const WebCursor& cursor) {
if (WebWidgetHost* host = GetHostForWidget(webwidget)) {
current_cursor_ = cursor;
HINSTANCE mod_handle = GetModuleHandle(NULL);
host->SetCursor(current_cursor_.GetCursor(mod_handle));
}
}
void BrowserWebViewDelegate::GetWindowRect(WebWidget* webwidget,
WebRect* out_rect) {
if (WebWidgetHost* host = GetHostForWidget(webwidget)) {
RECT rect;
::GetWindowRect(host->window_handle(), &rect);
*out_rect = gfx::Rect(rect);
}
}
void BrowserWebViewDelegate::SetWindowRect(WebWidget* webwidget,
const WebRect& rect) {
if (webwidget == browser_->GetWebView()) {
// ignored
} else if (webwidget == browser_->GetPopup()) {
MoveWindow(browser_->GetPopupWndHandle(),
rect.x, rect.y, rect.width, rect.height, FALSE);
}
}
void BrowserWebViewDelegate::GetRootWindowRect(WebWidget* webwidget,
WebRect* out_rect) {
if (WebWidgetHost* host = GetHostForWidget(webwidget)) {
RECT rect;
HWND root_window = ::GetAncestor(host->window_handle(), GA_ROOT);
::GetWindowRect(root_window, &rect);
*out_rect = gfx::Rect(rect);
}
}
void BrowserWebViewDelegate::GetRootWindowResizerRect(WebWidget* webwidget,
WebRect* out_rect) {
// Not necessary on Windows.
*out_rect = gfx::Rect();
}
void BrowserWebViewDelegate::DidMove(WebWidget* webwidget,
const WebPluginGeometry& move) {
HRGN hrgn = ::CreateRectRgn(move.clip_rect.x(),
move.clip_rect.y(),
move.clip_rect.right(),
move.clip_rect.bottom());
gfx::SubtractRectanglesFromRegion(hrgn, move.cutout_rects);
// Note: System will own the hrgn after we call SetWindowRgn,
// so we don't need to call DeleteObject(hrgn)
::SetWindowRgn(move.window, hrgn, FALSE);
unsigned long flags = 0;
if (move.visible)
flags |= SWP_SHOWWINDOW;
else
flags |= SWP_HIDEWINDOW;
::SetWindowPos(move.window,
NULL,
move.window_rect.x(),
move.window_rect.y(),
move.window_rect.width(),
move.window_rect.height(),
flags);
}
void BrowserWebViewDelegate::RunModal(WebWidget* webwidget) {
Show(webwidget, NEW_WINDOW);
CefContext::BrowserList *list;
CefContext::BrowserList::const_iterator i;
_Context->Lock();
list = _Context->GetBrowserList();
i = list->begin();
for (; i != list->end(); ++i) {
if (i->get()->IsPopup())
EnableWindow(i->get()->GetMainWndHandle(), FALSE);
}
_Context->Unlock();
browser_->UIT_SetIsModal(true);
MessageLoop::current()->Run();
_Context->Lock();
list = _Context->GetBrowserList();
i = list->begin();
for (; i != list->end(); ++i)
EnableWindow(i->get()->GetMainWndHandle(), TRUE);
_Context->Unlock();
}
static void AddMenuItem(CefRefPtr<CefBrowser> browser, HMENU menu, int index,
CefHandler::MenuId id, const wchar_t* label,
bool enabled, std::list<std::wstring>& label_list)
{
std::wstring actual_label = label;
CefRefPtr<CefHandler> handler = browser->GetHandler();
if(handler.get()) {
// Let the handler change the label if desired
handler->HandleGetMenuLabel(browser, id, actual_label);
}
// store the label in a list to simplify memory management
label_list.push_back(actual_label);
MENUITEMINFO mii;
mii.cbSize = sizeof(mii);
mii.fMask = MIIM_FTYPE | MIIM_ID | MIIM_STRING;
mii.fType = MFT_STRING;
if(!enabled) {
mii.fMask |= MIIM_STATE;
mii.fState = MFS_GRAYED;
}
mii.wID = id;
mii.dwTypeData = const_cast<wchar_t*>(label_list.back().c_str());
InsertMenuItem(menu, index, TRUE, &mii);
}
static void AddMenuSeparator(HMENU menu, int index)
{
MENUITEMINFO mii;
mii.cbSize = sizeof(mii);
mii.fMask = MIIM_FTYPE;
mii.fType = MFT_SEPARATOR;
InsertMenuItem(menu, index, TRUE, &mii);
}
void BrowserWebViewDelegate::ShowContextMenu(WebView* webview,
ContextNode in_node,
int x,
int y,
const GURL& link_url,
const GURL& image_url,
const GURL& page_url,
const GURL& frame_url,
const std::wstring& selection_text,
const std::wstring& misspelled_word,
int edit_flags,
const std::string& security_info,
const std::string& frame_charset) {
POINT screen_pt = { x, y };
MapWindowPoints(browser_->GetMainWndHandle(), HWND_DESKTOP,
&screen_pt, 1);
HMENU menu = NULL;
std::list<std::wstring> label_list;
// Enable recursive tasks on the message loop so we can get updates while
// the context menu is being displayed.
bool old_state = MessageLoop::current()->NestableTasksAllowed();
MessageLoop::current()->SetNestableTasksAllowed(true);
if(browser_->UIT_CanGoBack())
edit_flags |= MENU_CAN_GO_BACK;
if(browser_->UIT_CanGoForward())
edit_flags |= MENU_CAN_GO_FORWARD;
CefRefPtr<CefHandler> handler = browser_->GetHandler();
if(handler.get()) {
// Gather menu information
CefHandler::MenuInfo menuInfo;
std::wstring linkstr, imagestr, pagestr, framestr, securitystr;
linkstr = UTF8ToWide(link_url.spec().c_str());
imagestr = UTF8ToWide(image_url.spec().c_str());
pagestr = UTF8ToWide(page_url.spec().c_str());
framestr = UTF8ToWide(frame_url.spec().c_str());
securitystr = UTF8ToWide(security_info);
menuInfo.typeFlags = in_node.type;
menuInfo.x = screen_pt.x;
menuInfo.y = screen_pt.y;
menuInfo.linkUrl = linkstr.c_str();
menuInfo.imageUrl = imagestr.c_str();
menuInfo.pageUrl = pagestr.c_str();
menuInfo.frameUrl = framestr.c_str();
menuInfo.selectionText = selection_text.c_str();
menuInfo.misspelledWord = misspelled_word.c_str();
menuInfo.editFlags = edit_flags;
menuInfo.securityInfo = securitystr.c_str();
// Notify the handler that a context menu is requested
CefHandler::RetVal rv = handler->HandleBeforeMenu(browser_, menuInfo);
if(rv == RV_HANDLED)
goto end;
}
// Build the correct default context menu
if (in_node.type & ContextNode::EDITABLE) {
menu = CreatePopupMenu();
AddMenuItem(browser_, menu, -1, MENU_ID_UNDO, L"Undo",
!!(edit_flags & ContextNode::CAN_UNDO), label_list);
AddMenuItem(browser_, menu, -1, MENU_ID_REDO, L"Redo",
!!(edit_flags & ContextNode::CAN_REDO), label_list);
AddMenuSeparator(menu, -1);
AddMenuItem(browser_, menu, -1, MENU_ID_CUT, L"Cut",
!!(edit_flags & ContextNode::CAN_CUT), label_list);
AddMenuItem(browser_, menu, -1, MENU_ID_COPY, L"Copy",
!!(edit_flags & ContextNode::CAN_COPY), label_list);
AddMenuItem(browser_, menu, -1, MENU_ID_PASTE, L"Paste",
!!(edit_flags & ContextNode::CAN_PASTE), label_list);
AddMenuItem(browser_, menu, -1, MENU_ID_DELETE, L"Delete",
!!(edit_flags & ContextNode::CAN_DELETE), label_list);
AddMenuSeparator(menu, -1);
AddMenuItem(browser_, menu, -1, MENU_ID_SELECTALL, L"Select All",
!!(edit_flags & MENU_CAN_SELECT_ALL), label_list);
} else if(in_node.type & ContextNode::SELECTION) {
menu = CreatePopupMenu();
AddMenuItem(browser_, menu, -1, MENU_ID_COPY, L"Copy",
!!(edit_flags & ContextNode::CAN_COPY), label_list);
} else if(in_node.type & (ContextNode::PAGE | ContextNode::FRAME)) {
menu = CreatePopupMenu();
AddMenuItem(browser_, menu, -1, MENU_ID_NAV_BACK, L"Back",
browser_->UIT_CanGoBack(), label_list);
AddMenuItem(browser_, menu, -1, MENU_ID_NAV_FORWARD, L"Forward",
browser_->UIT_CanGoForward(), label_list);
AddMenuSeparator(menu, -1);
AddMenuItem(browser_, menu, -1, MENU_ID_PRINT, L"Print",
true, label_list);
AddMenuItem(browser_, menu, -1, MENU_ID_VIEWSOURCE, L"View Source",
true, label_list);
}
if(menu) {
// show the context menu
int selected_id = TrackPopupMenu(menu,
TPM_LEFTALIGN | TPM_RIGHTBUTTON | TPM_RETURNCMD | TPM_RECURSE,
screen_pt.x, screen_pt.y, 0, browser_->GetMainWndHandle(), NULL);
if(selected_id != 0) {
// An action was chosen
CefHandler::MenuId menuId = static_cast<CefHandler::MenuId>(selected_id);
bool handled = false;
if(handler.get()) {
// Ask the handler if it wants to handle the action
CefHandler::RetVal rv = handler->HandleMenuAction(browser_, menuId);
handled = (rv == RV_HANDLED);
}
if(!handled) {
// Execute the action
CefRefPtr<CefFrame> frame = browser_->GetFocusedFrame();
frame->AddRef();
browser_->UIT_HandleAction(menuId, frame.get());
}
}
}
DestroyMenu(menu);
end:
MessageLoop::current()->SetNestableTasksAllowed(old_state);
}
// Private methods -----------------------------------------------------------
void BrowserWebViewDelegate::ShowJavaScriptAlert(WebFrame* webframe,
const std::wstring& message)
{
// TODO(cef): Think about what we should be showing as the prompt caption
MessageBox(browser_->GetMainWndHandle(), message.c_str(),
browser_->UIT_GetTitle().c_str(), MB_OK | MB_ICONWARNING);
}
bool BrowserWebViewDelegate::ShowJavaScriptConfirm(WebFrame* webframe,
const std::wstring& message)
{
// TODO(cef): Think about what we should be showing as the prompt caption
int rv = MessageBox(browser_->GetMainWndHandle(), message.c_str(),
browser_->UIT_GetTitle().c_str(),
MB_YESNO | MB_ICONQUESTION);
return (rv == IDYES);
}
bool BrowserWebViewDelegate::ShowJavaScriptPrompt(WebFrame* webframe,
const std::wstring& message,
const std::wstring& default_value,
std::wstring* result)
{
// TODO(cef): Implement a default prompt dialog
return false;
}
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