Drag-and-drop: DragEnter, DragOver, DragLeave, DragDrop

content/renderer/render_view_impl.cc

 // Copyright (c) 2012 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.
 
 #include "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 42 matching lines @@
 #include "content/common/input_messages.h"
 #include "content/common/page_messages.h"
 #include "content/common/render_message_filter.mojom.h"
 #include "content/common/site_isolation_policy.h"
 #include "content/common/view_messages.h"
 #include "content/public/common/bindings_policy.h"
 #include "content/public/common/browser_side_navigation_policy.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
-#include "content/public/common/drop_data.h"
 #include "content/public/common/favicon_url.h"
 #include "content/public/common/page_importance_signals.h"
 #include "content/public/common/page_state.h"
 #include "content/public/common/page_zoom.h"
 #include "content/public/common/three_d_api_types.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/common/web_preferences.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/public/renderer/document_state.h"
 #include "content/public/renderer/navigation_state.h"
@@ skipping 30 matching lines @@
 #include "media/renderers/gpu_video_accelerator_factories.h"
 #include "net/base/data_url.h"
 #include "net/base/escape.h"
 #include "net/base/net_errors.h"
 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 #include "net/http/http_util.h"
 #include "skia/ext/platform_canvas.h"
 #include "third_party/WebKit/public/platform/FilePathConversion.h"
 #include "third_party/WebKit/public/platform/URLConversion.h"
 #include "third_party/WebKit/public/platform/WebConnectionType.h"
-#include "third_party/WebKit/public/platform/WebDragData.h"
 #include "third_party/WebKit/public/platform/WebHTTPBody.h"
 #include "third_party/WebKit/public/platform/WebImage.h"
 #include "third_party/WebKit/public/platform/WebMessagePortChannel.h"
 #include "third_party/WebKit/public/platform/WebPoint.h"
 #include "third_party/WebKit/public/platform/WebRect.h"
 #include "third_party/WebKit/public/platform/WebSize.h"
 #include "third_party/WebKit/public/platform/WebStorageQuotaCallbacks.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/platform/WebURLError.h"
@@ skipping 30 matching lines @@
 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
 #include "third_party/WebKit/public/web/WebScriptSource.h"
 #include "third_party/WebKit/public/web/WebSearchableFormData.h"
 #include "third_party/WebKit/public/web/WebSecurityPolicy.h"
 #include "third_party/WebKit/public/web/WebSettings.h"
 #include "third_party/WebKit/public/web/WebUserGestureIndicator.h"
 #include "third_party/WebKit/public/web/WebView.h"
 #include "third_party/WebKit/public/web/WebWindowFeatures.h"
 #include "third_party/icu/source/common/unicode/uchar.h"
 #include "third_party/icu/source/common/unicode/uscript.h"
-#include "ui/base/clipboard/clipboard.h"
 #include "ui/base/ui_base_switches_util.h"
 #include "ui/events/latency_info.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/rect_conversions.h"
 #include "ui/gfx/geometry/size_conversions.h"
 #include "ui/gfx/native_widget_types.h"
 #include "url/origin.h"
 #include "url/url_constants.h"
 #include "v8/include/v8.h"
@@ skipping 24 matching lines @@
 #endif
 
 using blink::WebAXObject;
 using blink::WebApplicationCacheHost;
 using blink::WebApplicationCacheHostClient;
 using blink::WebColor;
 using blink::WebConsoleMessage;
 using blink::WebData;
 using blink::WebDataSource;
 using blink::WebDocument;
-using blink::WebDragData;
 using blink::WebDragOperation;
-using blink::WebDragOperationsMask;
 using blink::WebElement;
 using blink::WebFileChooserCompletion;
 using blink::WebFormControlElement;
 using blink::WebFormElement;
 using blink::WebFrame;
 using blink::WebFrameContentDumper;
 using blink::WebGestureEvent;
 using blink::WebHistoryItem;
 using blink::WebHTTPBody;
 using blink::WebHitTestResult;
@@ skipping 149 matching lines @@
   DCHECK(sizes->empty());
   sizes->reserve(web_sizes.size());
   for (size_t i = 0; i < web_sizes.size(); ++i)
     sizes->push_back(gfx::Size(web_sizes[i]));
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 namespace {
 
-WebDragData DropMetaDataToWebDragData(
-    const std::vector<DropData::Metadata>& drop_meta_data) {
-  std::vector<WebDragData::Item> item_list;
-  for (const auto& meta_data_item : drop_meta_data) {
-    if (meta_data_item.kind == DropData::Kind::STRING) {
-      WebDragData::Item item;
-      item.storageType = WebDragData::Item::StorageTypeString;
-      item.stringType = meta_data_item.mime_type;
-      // Have to pass a dummy URL here instead of an empty URL because the
-      // DropData received by browser_plugins goes through a round trip:
-      // DropData::MetaData --> WebDragData-->DropData. In the end, DropData
-      // will contain an empty URL (which means no URL is dragged) if the URL in
-      // WebDragData is empty.
-      if (base::EqualsASCII(meta_data_item.mime_type,
-                            ui::Clipboard::kMimeTypeURIList)) {
-        item.stringData = WebString::fromUTF8("about:dragdrop-placeholder");
-      }
-      item_list.push_back(item);
-      continue;
-    }
-
-    // TODO(hush): crbug.com/584789. Blink needs to support creating a file with
-    // just the mimetype. This is needed to drag files to WebView on Android
-    // platform.
-    if ((meta_data_item.kind == DropData::Kind::FILENAME) &&
-        !meta_data_item.filename.empty()) {
-      WebDragData::Item item;
-      item.storageType = WebDragData::Item::StorageTypeFilename;
-      item.filenameData = meta_data_item.filename.AsUTF16Unsafe();
-      item_list.push_back(item);
-      continue;
-    }
-
-    if (meta_data_item.kind == DropData::Kind::FILESYSTEMFILE) {
-      WebDragData::Item item;
-      item.storageType = WebDragData::Item::StorageTypeFileSystemFile;
-      item.fileSystemURL = meta_data_item.file_system_url;
-      item_list.push_back(item);
-      continue;
-    }
-  }
-
-  WebDragData result;
-  result.initialize();
-  result.setItems(item_list);
-  return result;
-}
-
-WebDragData DropDataToWebDragData(const DropData& drop_data) {
-  std::vector<WebDragData::Item> item_list;
-
-  // These fields are currently unused when dragging into WebKit.
-  DCHECK(drop_data.download_metadata.empty());
-  DCHECK(drop_data.file_contents.empty());
-  DCHECK(drop_data.file_description_filename.empty());
-
-  if (!drop_data.text.is_null()) {
-    WebDragData::Item item;
-    item.storageType = WebDragData::Item::StorageTypeString;
-    item.stringType = WebString::fromUTF8(ui::Clipboard::kMimeTypeText);
-    item.stringData = drop_data.text.string();
-    item_list.push_back(item);
-  }
-
-  if (!drop_data.url.is_empty()) {
-    WebDragData::Item item;
-    item.storageType = WebDragData::Item::StorageTypeString;
-    item.stringType = WebString::fromUTF8(ui::Clipboard::kMimeTypeURIList);
-    item.stringData = WebString::fromUTF8(drop_data.url.spec());
-    item.title = drop_data.url_title;
-    item_list.push_back(item);
-  }
-
-  if (!drop_data.html.is_null()) {
-    WebDragData::Item item;
-    item.storageType = WebDragData::Item::StorageTypeString;
-    item.stringType = WebString::fromUTF8(ui::Clipboard::kMimeTypeHTML);
-    item.stringData = drop_data.html.string();
-    item.baseURL = drop_data.html_base_url;
-    item_list.push_back(item);
-  }
-
-  for (std::vector<ui::FileInfo>::const_iterator it =
-           drop_data.filenames.begin();
-       it != drop_data.filenames.end();
-       ++it) {
-    WebDragData::Item item;
-    item.storageType = WebDragData::Item::StorageTypeFilename;
-    item.filenameData = it->path.AsUTF16Unsafe();
-    item.displayNameData = it->display_name.AsUTF16Unsafe();
-    item_list.push_back(item);
-  }
-
-  for (std::vector<DropData::FileSystemFileInfo>::const_iterator it =
-           drop_data.file_system_files.begin();
-       it != drop_data.file_system_files.end();
-       ++it) {
-    WebDragData::Item item;
-    item.storageType = WebDragData::Item::StorageTypeFileSystemFile;
-    item.fileSystemURL = it->url;
-    item.fileSystemFileSize = it->size;
-    item_list.push_back(item);
-  }
-
-  for (std::map<base::string16, base::string16>::const_iterator it =
-           drop_data.custom_data.begin();
-       it != drop_data.custom_data.end();
-       ++it) {
-    WebDragData::Item item;
-    item.storageType = WebDragData::Item::StorageTypeString;
-    item.stringType = it->first;
-    item.stringData = it->second;
-    item_list.push_back(item);
-  }
-
-  WebDragData result;
-  result.initialize();
-  result.setItems(item_list);
-  result.setFilesystemId(drop_data.filesystem_id);
-  return result;
-}
-
 typedef void (*SetFontFamilyWrapper)(blink::WebSettings*,
                                      const base::string16&,
                                      UScriptCode);
 
 void SetStandardFontFamilyWrapper(WebSettings* settings,
                                   const base::string16& font,
                                   UScriptCode script) {
   settings->setStandardFontFamily(font, script);
 }
 
@@ skipping 786 matching lines @@
   }
 
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(RenderViewImpl, message)
     IPC_MESSAGE_HANDLER(InputMsg_ExecuteEditCommand, OnExecuteEditCommand)
     IPC_MESSAGE_HANDLER(InputMsg_MoveCaret, OnMoveCaret)
     IPC_MESSAGE_HANDLER(InputMsg_ScrollFocusedEditableNodeIntoRect,
                         OnScrollFocusedEditableNodeIntoRect)
     IPC_MESSAGE_HANDLER(ViewMsg_SetPageScale, OnSetPageScale)
     IPC_MESSAGE_HANDLER(ViewMsg_Zoom, OnZoom)
-    IPC_MESSAGE_HANDLER(DragMsg_TargetDragEnter, OnDragTargetDragEnter)
-    IPC_MESSAGE_HANDLER(DragMsg_TargetDragOver, OnDragTargetDragOver)
-    IPC_MESSAGE_HANDLER(DragMsg_TargetDragLeave, OnDragTargetDragLeave)
-    IPC_MESSAGE_HANDLER(DragMsg_TargetDrop, OnDragTargetDrop)
     IPC_MESSAGE_HANDLER(DragMsg_SourceEnded, OnDragSourceEnded)
     IPC_MESSAGE_HANDLER(DragMsg_SourceSystemDragEnded,
                         OnDragSourceSystemDragEnded)
     IPC_MESSAGE_HANDLER(ViewMsg_AllowBindings, OnAllowBindings)
     IPC_MESSAGE_HANDLER(ViewMsg_SetInitialFocus, OnSetInitialFocus)
     IPC_MESSAGE_HANDLER(ViewMsg_UpdateTargetURL_ACK, OnUpdateTargetURLAck)
     IPC_MESSAGE_HANDLER(ViewMsg_UpdateWebPreferences, OnUpdateWebPreferences)
     IPC_MESSAGE_HANDLER(ViewMsg_EnumerateDirectoryResponse,
                         OnEnumerateDirectoryResponse)
     IPC_MESSAGE_HANDLER(ViewMsg_ClosePage, OnClosePage)
@@ skipping 757 matching lines @@
     const blink::WebElement& element) {
   blink::WebRect bounding_box_in_window = element.boundsInViewport();
   ConvertViewportToWindowViaWidget(&bounding_box_in_window);
   return gfx::RectF(bounding_box_in_window);
 }
 
 bool RenderViewImpl::HasAddedInputHandler() const {
   return has_added_input_handler_;
 }
 
-gfx::Point RenderViewImpl::ConvertWindowPointToViewport(
-    const gfx::Point& point) {
-  blink::WebFloatRect point_in_viewport(point.x(), point.y(), 0, 0);
-  convertWindowToViewport(&point_in_viewport);
-  return gfx::Point(point_in_viewport.x, point_in_viewport.y);
-}
-
 void RenderViewImpl::didChangeIcon(WebLocalFrame* frame,
                                    WebIconURL::Type icon_type) {
   if (frame->parent())
     return;
 
   WebVector<WebIconURL> icon_urls = frame->iconURLs(icon_type);
   std::vector<FaviconURL> urls;
   for (size_t i = 0; i < icon_urls.size(); i++) {
     std::vector<gfx::Size> sizes;
     ConvertToFaviconSizes(icon_urls[i].sizes(), &sizes);
@@ skipping 146 matching lines @@
 
   enabled_bindings_ |= enabled_bindings_flags;
 
   // Keep track of the total bindings accumulated in this process.
   RenderProcess::current()->AddBindings(enabled_bindings_flags);
 
   if (main_render_frame_)
     main_render_frame_->MaybeEnableMojoBindings();
 }
 
-void RenderViewImpl::OnDragTargetDragEnter(
-    const std::vector<DropData::Metadata>& drop_meta_data,
-    const gfx::Point& client_point,
-    const gfx::Point& screen_point,
-    WebDragOperationsMask ops,
-    int key_modifiers) {
-  WebDragOperation operation = webview()->dragTargetDragEnter(
-      DropMetaDataToWebDragData(drop_meta_data), client_point, screen_point,
-      ops, key_modifiers);
-
-  Send(new DragHostMsg_UpdateDragCursor(GetRoutingID(), operation));
-}
-
-void RenderViewImpl::OnDragTargetDragOver(const gfx::Point& client_point,
-                                          const gfx::Point& screen_point,
-                                          WebDragOperationsMask ops,
-                                          int key_modifiers) {
-  WebDragOperation operation = webview()->dragTargetDragOver(
-      ConvertWindowPointToViewport(client_point),
-      screen_point,
-      ops,
-      key_modifiers);
-
-  Send(new DragHostMsg_UpdateDragCursor(GetRoutingID(), operation));
-}
-
-void RenderViewImpl::OnDragTargetDragLeave() {
-  webview()->dragTargetDragLeave();
-}
-
-void RenderViewImpl::OnDragTargetDrop(const DropData& drop_data,
-                                      const gfx::Point& client_point,
-                                      const gfx::Point& screen_point,
-                                      int key_modifiers) {
-  webview()->dragTargetDrop(DropDataToWebDragData(drop_data),
-                            ConvertWindowPointToViewport(client_point),
-                            screen_point, key_modifiers);
-}
-
 void RenderViewImpl::OnDragSourceEnded(const gfx::Point& client_point,
                                        const gfx::Point& screen_point,
                                        WebDragOperation op) {
   webview()->dragSourceEndedAt(
       ConvertWindowPointToViewport(client_point), screen_point, op);
 }
 
 void RenderViewImpl::OnDragSourceSystemDragEnded() {
   webview()->dragSourceSystemDragEnded();
 }
@@ skipping 654 matching lines @@
                             INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
   }
 
   std::unique_ptr<InputEventAck> ack(
       new InputEventAck(InputEventAckSource::MAIN_THREAD, input_event->type,
                         INPUT_EVENT_ACK_STATE_NOT_CONSUMED));
   OnInputEventAck(std::move(ack));
 }
 
 }  // namespace content