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08a19d5384
cef/libcef/browser_webview_delegate.cc
Marshall Greenblatt 08a19d5384 libcef: 
- Add the CefBrowser::CreateBrowserSync() method for synchronously creating a browser instance. (Issue #13, Suggested implementation by: vridosh)
- Add CefBrowser::SetFocus() and CefHandler::HandleTakeFocus() methods to deal with keyboard focus changes. (Issue #13, Suggested implementation by: vridosh)
- Add CefHandler::HandleBeforeWindowClose() to perform actions immediately before the browser window is destroyed. (Issue #13, Suggested implementation by: vridosh)
- Replace windows-specific address resolution code with GURL() in CefBrowserImpl::UIT_LoadURLForRequest(), CefBrowserImpl::UIT_LoadHTML() and CefBrowserImpl::UIT_LoadHTMLForStreamRef(), and move the methods from browser_impl_win.cc to browser_impl.cc. (Issue #13, Suggested implementation by: vridosh)
- Fix reference counting bugs, class definition problems and CefContext::Shutdown() bug resulting in Cef object leaks. (Issue #15)
- Add WebKit dependancy to libcef project.
- Add basic object count debugging for CefCToCpp and CefCppToC classes.

cefclient:
- Initialize the strPtr parameter to avoid URLs suffixed with garbage. (Issue #13, Fix by: vridosh)

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@19 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
2009-03-08 02:26:16 +00:00

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// Copyright (c) 2008 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_impl.h"
#include "browser_navigation_controller.h"
#include "context.h"
#include "request_impl.h"
#include "base/file_util.h"
#include "base/gfx/gdi_util.h"
#include "base/gfx/point.h"
#include "base/gfx/native_widget_types.h"
#include "base/message_loop.h"
#include "base/string_util.h"
#include "base/trace_event.h"
#include "net/base/net_errors.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/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"
#if defined(OS_WIN)
// TODO(port): make these files work everywhere.
#include "browser_drag_delegate.h"
#include "browser_drop_delegate.h"
#endif
namespace {
int next_page_id_ = 1;
} // namespace
// WebViewDelegate -----------------------------------------------------------
WebView* BrowserWebViewDelegate::CreateWebView(WebView* webview,
bool user_gesture) {
CefRefPtr<CefBrowserImpl> browser =
browser_->UIT_CreatePopupWindow(std::wstring());
return browser.get() ? browser->UIT_GetWebView() : NULL;
}
WebWidget* BrowserWebViewDelegate::CreatePopupWidget(WebView* webview,
bool activatable) {
return browser_->UIT_CreatePopupWidget(webview);
}
void BrowserWebViewDelegate::OpenURL(WebView* webview, const GURL& url,
const GURL& referrer,
WindowOpenDisposition disposition) {
DCHECK_NE(disposition, CURRENT_TAB); // No code for this
if (disposition == SUPPRESS_OPEN)
return;
CefRefPtr<CefBrowserImpl> browser =
browser_->UIT_CreatePopupWindow(UTF8ToWide(url.spec()));
if(browser.get())
browser->UIT_Show(browser->UIT_GetWebView(), disposition);
}
void BrowserWebViewDelegate::DidStartLoading(WebView* webview) {
// clear the title so we can tell if it wasn't provided by the page
browser_->UIT_SetTitle(std::wstring());
CefRefPtr<CefHandler> handler = browser_->GetHandler();
if(handler.get()) {
// Notify the handler that loading has started
handler->HandleLoadStart(browser_);
}
}
void BrowserWebViewDelegate::DidStopLoading(WebView* webview) {
if(browser_->UIT_GetTitle().empty()) {
// no title was provided by the page, so send a blank string to the client
CefRefPtr<CefHandler> handler = browser_->GetHandler();
if(handler.get()) {
// Notify the handler of a page title change
handler->HandleTitleChange(browser_, browser_->UIT_GetTitle());
}
}
CefRefPtr<CefHandler> handler = browser_->GetHandler();
if(handler.get()) {
// Notify the handler that loading has ended
handler->HandleLoadEnd(browser_);
}
}
void BrowserWebViewDelegate::WindowObjectCleared(WebFrame* webframe) {
browser_->UIT_BindJSObjectsToWindow(webframe);
}
WindowOpenDisposition BrowserWebViewDelegate::DispositionForNavigationAction(
WebView* webview,
WebFrame* frame,
const WebRequest* request,
WebNavigationType type,
WindowOpenDisposition disposition,
bool is_redirect) {
CefRefPtr<CefHandler> handler = browser_->GetHandler();
if(handler.get()) {
// Gather browse request information
CefRefPtr<CefRequest> req(CefRequest::CreateRequest());
req->SetURL(UTF8ToWide(request->GetURL().spec()));
req->SetMethod(UTF8ToWide(request->GetHttpMethod()));
if(request->HasUploadData()) {
scoped_refptr<net::UploadData> data(new net::UploadData());
request->GetUploadData(data.get());
CefRefPtr<CefPostData> postdata(CefPostData::CreatePostData());
static_cast<CefPostDataImpl*>(postdata.get())->Set(*data.get());
req->SetPostData(postdata);
}
WebRequest::HeaderMap map;
request->GetHttpHeaders(&map);
if(map.size() > 0)
static_cast<CefRequestImpl*>(req.get())->SetHeaderMap(map);
// Notify the handler of a browse request
CefHandler::RetVal rv = handler->HandleBeforeBrowse(browser_, req,
(CefHandler::NavType)type, is_redirect);
if(rv == RV_HANDLED)
return IGNORE_ACTION;
}
if (is_custom_policy_delegate_) {
std::wstring frame_name = frame->GetName();
printf("Policy delegate: attempt to load %s\n",
request->GetURL().spec().c_str());
return IGNORE_ACTION;
} else {
return WebViewDelegate::DispositionForNavigationAction(
webview, frame, request, type, disposition, is_redirect);
}
}
void BrowserWebViewDelegate::SetCustomPolicyDelegate(bool isCustom) {
is_custom_policy_delegate_ = isCustom;
}
void BrowserWebViewDelegate::AssignIdentifierToRequest(WebView* webview,
uint32 identifier,
const WebRequest& request) {
}
void BrowserWebViewDelegate::WillSendRequest(WebView* webview,
uint32 identifier,
WebRequest* request) {
}
void BrowserWebViewDelegate::DidFinishLoading(WebView* webview,
uint32 identifier) {
}
void BrowserWebViewDelegate::DidFailLoadingWithError(WebView* webview,
uint32 identifier,
const WebError& error) {
}
void BrowserWebViewDelegate::DidStartProvisionalLoadForFrame(
WebView* webview,
WebFrame* frame,
NavigationGesture gesture) {
if (!top_loading_frame_) {
top_loading_frame_ = frame;
}
UpdateAddressBar(webview);
}
void BrowserWebViewDelegate::DidReceiveServerRedirectForProvisionalLoadForFrame(
WebView* webview,
WebFrame* frame) {
UpdateAddressBar(webview);
}
void BrowserWebViewDelegate::DidFailProvisionalLoadWithError(
WebView* webview,
const WebError& error,
WebFrame* frame) {
LocationChangeDone(frame->GetProvisionalDataSource());
// error codes are defined in net\base\net_error_list.h
// Don't display an error page if this is simply a cancelled load. Aside
// from being dumb, WebCore doesn't expect it and it will cause a crash.
if (error.GetErrorCode() == net::ERR_ABORTED)
return;
const WebRequest& failed_request =
frame->GetProvisionalDataSource()->GetRequest();
BrowserExtraRequestData* extra_data =
static_cast<BrowserExtraRequestData*>(failed_request.GetExtraData());
bool replace = extra_data && extra_data->pending_page_id != -1;
scoped_ptr<WebRequest> request(failed_request.Clone());
request->SetURL(GURL("cef-error:"));
std::string error_text;
CefRefPtr<CefHandler> handler = browser_->GetHandler();
if(handler.get()) {
// give the handler an opportunity to generate a custom error message
std::wstring error_str;
CefHandler::RetVal rv = handler->HandleLoadError(browser_,
static_cast<CefHandler::ErrorCode>(error.GetErrorCode()),
UTF8ToWide(error.GetFailedURL().spec()), error_str);
if(rv == RV_HANDLED && !error_str.empty())
error_text = WideToUTF8(error_str);
} else {
error_text = StringPrintf("Error loading url: %d", error.GetErrorCode());
}
frame->LoadAlternateHTMLString(request.get(), error_text,
error.GetFailedURL(), replace);
}
void BrowserWebViewDelegate::DidCommitLoadForFrame(WebView* webview,
WebFrame* frame,
bool is_new_navigation) {
UpdateForCommittedLoad(frame, is_new_navigation);
}
void BrowserWebViewDelegate::DidReceiveTitle(WebView* webview,
const std::wstring& title,
WebFrame* frame) {
browser_->UIT_SetTitle(title);
CefRefPtr<CefHandler> handler = browser_->GetHandler();
if(handler.get()) {
// Notify the handler of a page title change
handler->HandleTitleChange(browser_, title);
}
}
void BrowserWebViewDelegate::DidFinishLoadForFrame(WebView* webview,
WebFrame* frame) {
UpdateAddressBar(webview);
LocationChangeDone(frame->GetDataSource());
}
void BrowserWebViewDelegate::DidFailLoadWithError(WebView* webview,
const WebError& error,
WebFrame* frame) {
LocationChangeDone(frame->GetDataSource());
}
void BrowserWebViewDelegate::DidFinishDocumentLoadForFrame(WebView* webview,
WebFrame* frame) {
}
void BrowserWebViewDelegate::DidHandleOnloadEventsForFrame(WebView* webview,
WebFrame* frame) {
}
void BrowserWebViewDelegate::DidChangeLocationWithinPageForFrame(
WebView* webview, WebFrame* frame, bool is_new_navigation) {
UpdateForCommittedLoad(frame, is_new_navigation);
}
void BrowserWebViewDelegate::DidReceiveIconForFrame(WebView* webview,
WebFrame* frame) {
}
void BrowserWebViewDelegate::WillPerformClientRedirect(WebView* webview,
WebFrame* frame,
const std::wstring& dest_url,
unsigned int delay_seconds,
unsigned int fire_date) {
}
void BrowserWebViewDelegate::DidCancelClientRedirect(WebView* webview,
WebFrame* frame) {
}
void BrowserWebViewDelegate::AddMessageToConsole(WebView* webview,
const std::wstring& message,
unsigned int line_no,
const std::wstring& source_id) {
logging::LogMessage("CONSOLE", 0).stream() << "\""
<< message.c_str()
<< ",\" source: "
<< source_id.c_str()
<< "("
<< line_no
<< ")";
}
void BrowserWebViewDelegate::RunJavaScriptAlert(WebView* webview,
const std::wstring& message) {
CefHandler::RetVal rv = RV_CONTINUE;
CefRefPtr<CefHandler> handler = browser_->GetHandler();
if(handler.get())
rv = handler->HandleJSAlert(browser_, message);
if(rv != RV_HANDLED)
ShowJavaScriptAlert(webview, message);
}
bool BrowserWebViewDelegate::RunJavaScriptConfirm(WebView* webview,
const std::wstring& message) {
CefHandler::RetVal rv = RV_CONTINUE;
bool retval = false;
CefRefPtr<CefHandler> handler = browser_->GetHandler();
if(handler.get())
rv = handler->HandleJSConfirm(browser_, message, retval);
if(rv != RV_HANDLED)
retval = ShowJavaScriptConfirm(webview, message);
return retval;
}
bool BrowserWebViewDelegate::RunJavaScriptPrompt(WebView* webview,
const std::wstring& message, const std::wstring& default_value,
std::wstring* result) {
CefHandler::RetVal rv = RV_CONTINUE;
bool retval = false;
CefRefPtr<CefHandler> handler = browser_->GetHandler();
if(handler.get()) {
rv = handler->HandleJSPrompt(browser_, message, default_value,
retval, *result);
}
if(rv != RV_HANDLED)
retval = ShowJavaScriptPrompt(webview, message, default_value, result);
return retval;
}
void BrowserWebViewDelegate::SetStatusbarText(WebView* webview,
const std::wstring& message) {
}
void BrowserWebViewDelegate::StartDragging(WebView* webview,
const WebDropData& drop_data) {
#if defined(OS_WIN)
// TODO(port): make this work on all platforms.
if (!drag_delegate_) {
drag_delegate_ = new BrowserDragDelegate(
browser_->UIT_GetWebViewWndHandle(),
browser_->UIT_GetWebView());
}
// TODO(tc): Drag and drop is disabled in the test shell because we need
// to be able to convert from WebDragData to an IDataObject.
//const DWORD ok_effect = DROPEFFECT_COPY | DROPEFFECT_LINK | DROPEFFECT_MOVE;
//DWORD effect;
//HRESULT res = DoDragDrop(drop_data.data_object, drag_delegate_.get(),
// ok_effect, &effect);
//DCHECK(DRAGDROP_S_DROP == res || DRAGDROP_S_CANCEL == res);
webview->DragSourceSystemDragEnded();
#endif
}
// The output from these methods in non-interactive mode should match that
// expected by the layout tests. See EditingDelegate.m in DumpRenderTree.
bool BrowserWebViewDelegate::ShouldBeginEditing(WebView* webview,
std::wstring range) {
return browser_->UIT_AllowEditing();
}
bool BrowserWebViewDelegate::ShouldEndEditing(WebView* webview,
std::wstring range) {
return browser_->UIT_AllowEditing();
}
bool BrowserWebViewDelegate::ShouldInsertNode(WebView* webview,
std::wstring node,
std::wstring range,
std::wstring action) {
return browser_->UIT_AllowEditing();
}
bool BrowserWebViewDelegate::ShouldInsertText(WebView* webview,
std::wstring text,
std::wstring range,
std::wstring action) {
return browser_->UIT_AllowEditing();
}
bool BrowserWebViewDelegate::ShouldChangeSelectedRange(WebView* webview,
std::wstring fromRange,
std::wstring toRange,
std::wstring affinity,
bool stillSelecting) {
return browser_->UIT_AllowEditing();
}
bool BrowserWebViewDelegate::ShouldDeleteRange(WebView* webview,
std::wstring range) {
return browser_->UIT_AllowEditing();
}
bool BrowserWebViewDelegate::ShouldApplyStyle(WebView* webview,
std::wstring style,
std::wstring range) {
return browser_->UIT_AllowEditing();
}
bool BrowserWebViewDelegate::SmartInsertDeleteEnabled() {
return true;
}
void BrowserWebViewDelegate::DidBeginEditing() {
}
void BrowserWebViewDelegate::DidChangeSelection() {
}
void BrowserWebViewDelegate::DidChangeContents() {
}
void BrowserWebViewDelegate::DidEndEditing() {
}
WebHistoryItem* BrowserWebViewDelegate::GetHistoryEntryAtOffset(int offset) {
BrowserNavigationEntry* entry = static_cast<BrowserNavigationEntry*>(
browser_->UIT_GetNavigationController()->GetEntryAtOffset(offset));
if (!entry)
return NULL;
return entry->GetHistoryItem();
}
int BrowserWebViewDelegate::GetHistoryBackListCount() {
int current_index =
browser_->UIT_GetNavigationController()->GetLastCommittedEntryIndex();
return current_index;
}
int BrowserWebViewDelegate::GetHistoryForwardListCount() {
int current_index =
browser_->UIT_GetNavigationController()->GetLastCommittedEntryIndex();
return browser_->UIT_GetNavigationController()->GetEntryCount()
- current_index - 1;
}
void BrowserWebViewDelegate::SetUserStyleSheetEnabled(bool is_enabled) {
WebPreferences* prefs = _Context->GetWebPreferences();
prefs->user_style_sheet_enabled = is_enabled;
browser_->UIT_GetWebView()->SetPreferences(*prefs);
}
void BrowserWebViewDelegate::SetUserStyleSheetLocation(const GURL& location) {
WebPreferences* prefs = _Context->GetWebPreferences();
prefs->user_style_sheet_enabled = true;
prefs->user_style_sheet_location = location;
browser_->UIT_GetWebView()->SetPreferences(*prefs);
}
// WebWidgetDelegate ---------------------------------------------------------
gfx::NativeViewId BrowserWebViewDelegate::GetContainingView(WebWidget* webwidget) {
if (WebWidgetHost* host = GetHostForWidget(webwidget))
return gfx::IdFromNativeView(host->window_handle());
return NULL;
}
void BrowserWebViewDelegate::DidInvalidateRect(WebWidget* webwidget,
const gfx::Rect& rect) {
if (WebWidgetHost* host = GetHostForWidget(webwidget))
host->DidInvalidateRect(rect);
}
void BrowserWebViewDelegate::DidScrollRect(WebWidget* webwidget, int dx, int dy,
const gfx::Rect& clip_rect) {
if (WebWidgetHost* host = GetHostForWidget(webwidget))
host->DidScrollRect(dx, dy, clip_rect);
}
void BrowserWebViewDelegate::Focus(WebWidget* webwidget) {
if (WebWidgetHost* host = GetHostForWidget(webwidget))
browser_->UIT_SetFocus(host, true);
}
void BrowserWebViewDelegate::Blur(WebWidget* webwidget) {
if (WebWidgetHost* host = GetHostForWidget(webwidget))
browser_->UIT_SetFocus(host, false);
}
bool BrowserWebViewDelegate::IsHidden() {
return false;
}
void BrowserWebViewDelegate::RegisterDragDrop() {
#if defined(OS_WIN)
// TODO(port): add me once drag and drop works.
DCHECK(!drop_delegate_);
drop_delegate_ = new BrowserDropDelegate(browser_->UIT_GetWebViewWndHandle(),
browser_->UIT_GetWebView());
#endif
}
// Private methods -----------------------------------------------------------
void BrowserWebViewDelegate::UpdateAddressBar(WebView* webView) {
/*
WebFrame* mainFrame = webView->UIT_GetMainFrame();
WebDataSource* dataSource = mainFrame->GetDataSource();
if (!dataSource)
dataSource = mainFrame->GetProvisionalDataSource();
if (!dataSource)
return;
GURL gUrl = dataSource->GetRequest().GetMainDocumentURL();
*/
}
void BrowserWebViewDelegate::LocationChangeDone(WebDataSource* data_source) {
if (data_source->GetWebFrame() == top_loading_frame_)
top_loading_frame_ = NULL;
}
WebWidgetHost* BrowserWebViewDelegate::GetHostForWidget(WebWidget* webwidget) {
if (webwidget == browser_->UIT_GetWebView())
return browser_->UIT_GetWebViewHost();
if (webwidget == browser_->UIT_GetPopup())
return browser_->UIT_GetPopupHost();
return NULL;
}
void BrowserWebViewDelegate::UpdateForCommittedLoad(WebFrame* frame,
bool is_new_navigation) {
WebView* webview = browser_->UIT_GetWebView();
// Code duplicated from RenderView::DidCommitLoadForFrame.
const WebRequest& request =
webview->GetMainFrame()->GetDataSource()->GetRequest();
BrowserExtraRequestData* extra_data =
static_cast<BrowserExtraRequestData*>(request.GetExtraData());
if (is_new_navigation) {
// New navigation.
UpdateSessionHistory(frame);
page_id_ = next_page_id_++;
} else if (extra_data && extra_data->pending_page_id != -1 &&
!extra_data->request_committed) {
// This is a successful session history navigation!
UpdateSessionHistory(frame);
page_id_ = extra_data->pending_page_id;
}
// Don't update session history multiple times.
if (extra_data)
extra_data->request_committed = true;
UpdateURL(frame);
}
void BrowserWebViewDelegate::UpdateURL(WebFrame* frame) {
WebDataSource* ds = frame->GetDataSource();
DCHECK(ds);
const WebRequest& request = ds->GetRequest();
// Type is unused.
scoped_ptr<BrowserNavigationEntry> entry(new BrowserNavigationEntry);
// Bug 654101: the referrer will be empty on https->http transitions. It
// would be nice if we could get the real referrer from somewhere.
entry->SetPageID(page_id_);
if (ds->HasUnreachableURL()) {
entry->SetURL(GURL(ds->GetUnreachableURL()));
} else {
entry->SetURL(GURL(request.GetURL()));
}
std::wstring url = UTF8ToWide(entry->GetURL().spec().c_str());
browser_->SetURL(url);
if(frame->GetView()->GetMainFrame() == frame) {
// only send address changes that originate from the main frame
CefRefPtr<CefHandler> handler = browser_->GetHandler();
if(handler.get()) {
// Notify the handler of an address change
handler->HandleAddressChange(browser_, url);
}
}
browser_->UIT_GetNavigationController()->DidNavigateToEntry(entry.release());
last_page_id_updated_ = std::max(last_page_id_updated_, page_id_);
}
void BrowserWebViewDelegate::UpdateSessionHistory(WebFrame* frame) {
// If we have a valid page ID at this point, then it corresponds to the page
// we are navigating away from. Otherwise, this is the first navigation, so
// there is no past session history to record.
if (page_id_ == -1)
return;
BrowserNavigationEntry* entry = static_cast<BrowserNavigationEntry*>(
browser_->UIT_GetNavigationController()->GetEntryWithPageID(page_id_));
if (!entry)
return;
std::string state;
if (!browser_->UIT_GetWebView()->GetMainFrame()->
GetPreviousHistoryState(&state))
return;
entry->SetContentState(state);
}
std::wstring BrowserWebViewDelegate::GetFrameDescription(WebFrame* webframe) {
std::wstring name = webframe->GetName();
if (webframe == browser_->UIT_GetWebView()->GetMainFrame()) {
if (name.length())
return L"main frame \"" + name + L"\"";
else
return L"main frame";
} else {
if (name.length())
return L"frame \"" + name + L"\"";
else
return L"frame (anonymous)";
}
}
void BrowserWebViewDelegate::TakeFocus(WebView* webview, bool reverse) {
CefRefPtr<CefHandler> handler = browser_->GetHandler();
if(handler.get()) {
// Notify the handler that it should take a focus
handler->HandleTakeFocus(browser_, reverse);
}
}
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