mirror of
https://bitbucket.org/chromiumembedded/cef
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a64237bcb0
Known issues: - The CefLoadCRLSetsFile function needs to be re-implemented (see issue #2497). - Linux: GTK2 support has been removed. The cefclient sample needs to be updated to use GTK3 (see issue #2014).
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "libcef/renderer/extensions/print_render_frame_helper_delegate.h"
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#include <vector>
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#include "chrome/common/chrome_switches.h"
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#include "chrome/common/extensions/extension_constants.h"
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#include "content/public/renderer/render_frame.h"
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#include "content/public/renderer/render_view.h"
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#include "extensions/common/constants.h"
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#include "extensions/renderer/guest_view/mime_handler_view/mime_handler_view_container.h"
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#include "third_party/blink/public/web/web_document.h"
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#include "third_party/blink/public/web/web_element.h"
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#include "third_party/blink/public/web/web_local_frame.h"
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namespace extensions {
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CefPrintRenderFrameHelperDelegate::~CefPrintRenderFrameHelperDelegate() {}
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bool CefPrintRenderFrameHelperDelegate::CancelPrerender(
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content::RenderFrame* render_frame) {
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return false;
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}
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// Return the PDF object element if |frame| is the out of process PDF extension.
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blink::WebElement CefPrintRenderFrameHelperDelegate::GetPdfElement(
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blink::WebLocalFrame* frame) {
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GURL url = frame->GetDocument().Url();
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if (url.SchemeIs(extensions::kExtensionScheme) &&
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url.host() == extension_misc::kPdfExtensionId) {
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// <object> with id="plugin" is created in
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// chrome/browser/resources/pdf/pdf.js.
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auto plugin_element = frame->GetDocument().GetElementById("plugin");
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if (!plugin_element.IsNull()) {
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return plugin_element;
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}
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NOTREACHED();
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}
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return blink::WebElement();
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}
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bool CefPrintRenderFrameHelperDelegate::IsPrintPreviewEnabled() {
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return false;
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}
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bool CefPrintRenderFrameHelperDelegate::OverridePrint(
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blink::WebLocalFrame* frame) {
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if (!frame->GetDocument().IsPluginDocument())
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return false;
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auto mime_handlers = extensions::MimeHandlerViewContainer::FromRenderFrame(
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content::RenderFrame::FromWebFrame(frame));
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if (!mime_handlers.empty()) {
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// This message is handled in chrome/browser/resources/pdf/pdf.js and
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// instructs the PDF plugin to print. This is to make window.print() on a
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// PDF plugin document correctly print the PDF. See
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// https://crbug.com/448720.
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base::DictionaryValue message;
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message.SetString("type", "print");
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mime_handlers.front()->PostMessageFromValue(message);
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return true;
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}
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return false;
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}
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} // namespace extensions
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