| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "content/browser/web_contents/web_drag_dest_win.h" | |
| 6 | |
| 7 #include <windows.h> | |
| 8 #include <shlobj.h> | |
| 9 | |
| 10 #include "base/win/win_util.h" | |
| 11 #include "content/browser/renderer_host/render_view_host_impl.h" | |
| 12 #include "content/browser/web_contents/web_drag_utils_win.h" | |
| 13 #include "content/public/browser/web_contents.h" | |
| 14 #include "content/public/browser/web_contents_delegate.h" | |
| 15 #include "content/public/browser/web_drag_dest_delegate.h" | |
| 16 #include "content/public/common/drop_data.h" | |
| 17 #include "net/base/net_util.h" | |
| 18 #include "third_party/WebKit/public/web/WebInputEvent.h" | |
| 19 #include "ui/base/clipboard/clipboard_util_win.h" | |
| 20 #include "ui/base/dragdrop/os_exchange_data.h" | |
| 21 #include "ui/base/dragdrop/os_exchange_data_provider_win.h" | |
| 22 #include "ui/base/window_open_disposition.h" | |
| 23 #include "ui/gfx/point.h" | |
| 24 #include "url/gurl.h" | |
| 25 | |
| 26 using blink::WebDragOperationNone; | |
| 27 using blink::WebDragOperationCopy; | |
| 28 using blink::WebDragOperationLink; | |
| 29 using blink::WebDragOperationMove; | |
| 30 using blink::WebDragOperationGeneric; | |
| 31 | |
| 32 namespace content { | |
| 33 namespace { | |
| 34 | |
| 35 const unsigned short kHighBitMaskShort = 0x8000; | |
| 36 | |
| 37 // A helper method for getting the preferred drop effect. | |
| 38 DWORD GetPreferredDropEffect(DWORD effect) { | |
| 39 if (effect & DROPEFFECT_COPY) | |
| 40 return DROPEFFECT_COPY; | |
| 41 if (effect & DROPEFFECT_LINK) | |
| 42 return DROPEFFECT_LINK; | |
| 43 if (effect & DROPEFFECT_MOVE) | |
| 44 return DROPEFFECT_MOVE; | |
| 45 return DROPEFFECT_NONE; | |
| 46 } | |
| 47 | |
| 48 int GetModifierFlags() { | |
| 49 int modifier_state = 0; | |
| 50 if (base::win::IsShiftPressed()) | |
| 51 modifier_state |= blink::WebInputEvent::ShiftKey; | |
| 52 if (base::win::IsCtrlPressed()) | |
| 53 modifier_state |= blink::WebInputEvent::ControlKey; | |
| 54 if (base::win::IsAltPressed()) | |
| 55 modifier_state |= blink::WebInputEvent::AltKey; | |
| 56 if (::GetKeyState(VK_LWIN) & kHighBitMaskShort) | |
| 57 modifier_state |= blink::WebInputEvent::MetaKey; | |
| 58 if (::GetKeyState(VK_RWIN) & kHighBitMaskShort) | |
| 59 modifier_state |= blink::WebInputEvent::MetaKey; | |
| 60 return modifier_state; | |
| 61 } | |
| 62 | |
| 63 // Helper method for converting Window's specific IDataObject to a DropData | |
| 64 // object. | |
| 65 void PopulateDropData(IDataObject* data_object, DropData* drop_data) { | |
| 66 base::string16 url_str; | |
| 67 if (ui::ClipboardUtil::GetUrl( | |
| 68 data_object, &url_str, &drop_data->url_title, false)) { | |
| 69 GURL test_url(url_str); | |
| 70 if (test_url.is_valid()) | |
| 71 drop_data->url = test_url; | |
| 72 } | |
| 73 std::vector<base::string16> filenames; | |
| 74 ui::ClipboardUtil::GetFilenames(data_object, &filenames); | |
| 75 for (size_t i = 0; i < filenames.size(); ++i) | |
| 76 drop_data->filenames.push_back( | |
| 77 DropData::FileInfo(filenames[i], base::string16())); | |
| 78 base::string16 text; | |
| 79 ui::ClipboardUtil::GetPlainText(data_object, &text); | |
| 80 if (!text.empty()) { | |
| 81 drop_data->text = base::NullableString16(text, false); | |
| 82 } | |
| 83 base::string16 html; | |
| 84 std::string html_base_url; | |
| 85 ui::ClipboardUtil::GetHtml(data_object, &html, &html_base_url); | |
| 86 if (!html.empty()) { | |
| 87 drop_data->html = base::NullableString16(html, false); | |
| 88 } | |
| 89 if (!html_base_url.empty()) { | |
| 90 drop_data->html_base_url = GURL(html_base_url); | |
| 91 } | |
| 92 ui::ClipboardUtil::GetWebCustomData(data_object, &drop_data->custom_data); | |
| 93 } | |
| 94 | |
| 95 } // namespace | |
| 96 | |
| 97 // InterstitialDropTarget is like a ui::DropTargetWin implementation that | |
| 98 // WebDragDest passes through to if an interstitial is showing. Rather than | |
| 99 // passing messages on to the renderer, we just check to see if there's a link | |
| 100 // in the drop data and handle links as navigations. | |
| 101 class InterstitialDropTarget { | |
| 102 public: | |
| 103 explicit InterstitialDropTarget(WebContents* web_contents) | |
| 104 : web_contents_(web_contents) {} | |
| 105 | |
| 106 DWORD OnDragEnter(IDataObject* data_object, DWORD effect) { | |
| 107 return ui::ClipboardUtil::HasUrl(data_object) ? | |
| 108 GetPreferredDropEffect(effect) : DROPEFFECT_NONE; | |
| 109 } | |
| 110 | |
| 111 DWORD OnDragOver(IDataObject* data_object, DWORD effect) { | |
| 112 return ui::ClipboardUtil::HasUrl(data_object) ? | |
| 113 GetPreferredDropEffect(effect) : DROPEFFECT_NONE; | |
| 114 } | |
| 115 | |
| 116 void OnDragLeave(IDataObject* data_object) { | |
| 117 } | |
| 118 | |
| 119 DWORD OnDrop(IDataObject* data_object, DWORD effect) { | |
| 120 if (!ui::ClipboardUtil::HasUrl(data_object)) | |
| 121 return DROPEFFECT_NONE; | |
| 122 | |
| 123 std::wstring url; | |
| 124 std::wstring title; | |
| 125 ui::ClipboardUtil::GetUrl(data_object, &url, &title, true); | |
| 126 OpenURLParams params(GURL(url), Referrer(), CURRENT_TAB, | |
| 127 PAGE_TRANSITION_AUTO_BOOKMARK, false); | |
| 128 web_contents_->OpenURL(params); | |
| 129 return GetPreferredDropEffect(effect); | |
| 130 } | |
| 131 | |
| 132 private: | |
| 133 WebContents* web_contents_; | |
| 134 | |
| 135 DISALLOW_COPY_AND_ASSIGN(InterstitialDropTarget); | |
| 136 }; | |
| 137 | |
| 138 WebDragDest::WebDragDest(HWND source_hwnd, WebContents* web_contents) | |
| 139 : ui::DropTargetWin(source_hwnd), | |
| 140 web_contents_(web_contents), | |
| 141 current_rvh_(NULL), | |
| 142 drag_cursor_(WebDragOperationNone), | |
| 143 interstitial_drop_target_(new InterstitialDropTarget(web_contents)), | |
| 144 delegate_(NULL), | |
| 145 canceled_(false) { | |
| 146 } | |
| 147 | |
| 148 WebDragDest::~WebDragDest() { | |
| 149 } | |
| 150 | |
| 151 DWORD WebDragDest::OnDragEnter(IDataObject* data_object, | |
| 152 DWORD key_state, | |
| 153 POINT cursor_position, | |
| 154 DWORD effects) { | |
| 155 current_rvh_ = web_contents_->GetRenderViewHost(); | |
| 156 | |
| 157 // TODO(tc): PopulateDropData can be slow depending on what is in the | |
| 158 // IDataObject. Maybe we can do this in a background thread. | |
| 159 scoped_ptr<DropData> drop_data; | |
| 160 drop_data.reset(new DropData()); | |
| 161 PopulateDropData(data_object, drop_data.get()); | |
| 162 | |
| 163 if (drop_data->url.is_empty()) | |
| 164 ui::OSExchangeDataProviderWin::GetPlainTextURL(data_object, | |
| 165 &drop_data->url); | |
| 166 | |
| 167 // Give the delegate an opportunity to cancel the drag. | |
| 168 canceled_ = !web_contents_->GetDelegate()->CanDragEnter( | |
| 169 web_contents_, | |
| 170 *drop_data, | |
| 171 WinDragOpMaskToWebDragOpMask(effects)); | |
| 172 if (canceled_) | |
| 173 return DROPEFFECT_NONE; | |
| 174 | |
| 175 if (delegate_) | |
| 176 delegate_->DragInitialize(web_contents_); | |
| 177 | |
| 178 // Don't pass messages to the renderer if an interstitial page is showing | |
| 179 // because we don't want the interstitial page to navigate. Instead, | |
| 180 // pass the messages on to a separate interstitial DropTarget handler. | |
| 181 if (web_contents_->ShowingInterstitialPage()) | |
| 182 return interstitial_drop_target_->OnDragEnter(data_object, effects); | |
| 183 | |
| 184 drop_data_.swap(drop_data); | |
| 185 drag_cursor_ = WebDragOperationNone; | |
| 186 | |
| 187 POINT client_pt = cursor_position; | |
| 188 ScreenToClient(GetHWND(), &client_pt); | |
| 189 web_contents_->GetRenderViewHost()->DragTargetDragEnter(*drop_data_, | |
| 190 gfx::Point(client_pt.x, client_pt.y), | |
| 191 gfx::Point(cursor_position.x, cursor_position.y), | |
| 192 WinDragOpMaskToWebDragOpMask(effects), | |
| 193 GetModifierFlags()); | |
| 194 | |
| 195 if (delegate_) | |
| 196 delegate_->OnDragEnter(data_object); | |
| 197 | |
| 198 // We lie here and always return a DROPEFFECT because we don't want to | |
| 199 // wait for the IPC call to return. | |
| 200 return WebDragOpToWinDragOp(drag_cursor_); | |
| 201 } | |
| 202 | |
| 203 DWORD WebDragDest::OnDragOver(IDataObject* data_object, | |
| 204 DWORD key_state, | |
| 205 POINT cursor_position, | |
| 206 DWORD effects) { | |
| 207 DCHECK(current_rvh_); | |
| 208 if (current_rvh_ != web_contents_->GetRenderViewHost()) | |
| 209 OnDragEnter(data_object, key_state, cursor_position, effects); | |
| 210 | |
| 211 if (canceled_) | |
| 212 return DROPEFFECT_NONE; | |
| 213 | |
| 214 if (web_contents_->ShowingInterstitialPage()) | |
| 215 return interstitial_drop_target_->OnDragOver(data_object, effects); | |
| 216 | |
| 217 POINT client_pt = cursor_position; | |
| 218 ScreenToClient(GetHWND(), &client_pt); | |
| 219 web_contents_->GetRenderViewHost()->DragTargetDragOver( | |
| 220 gfx::Point(client_pt.x, client_pt.y), | |
| 221 gfx::Point(cursor_position.x, cursor_position.y), | |
| 222 WinDragOpMaskToWebDragOpMask(effects), | |
| 223 GetModifierFlags()); | |
| 224 | |
| 225 if (delegate_) | |
| 226 delegate_->OnDragOver(data_object); | |
| 227 | |
| 228 return WebDragOpToWinDragOp(drag_cursor_); | |
| 229 } | |
| 230 | |
| 231 void WebDragDest::OnDragLeave(IDataObject* data_object) { | |
| 232 DCHECK(current_rvh_); | |
| 233 if (current_rvh_ != web_contents_->GetRenderViewHost()) | |
| 234 return; | |
| 235 | |
| 236 if (canceled_) | |
| 237 return; | |
| 238 | |
| 239 if (web_contents_->ShowingInterstitialPage()) { | |
| 240 interstitial_drop_target_->OnDragLeave(data_object); | |
| 241 } else { | |
| 242 web_contents_->GetRenderViewHost()->DragTargetDragLeave(); | |
| 243 } | |
| 244 | |
| 245 if (delegate_) | |
| 246 delegate_->OnDragLeave(data_object); | |
| 247 | |
| 248 drop_data_.reset(); | |
| 249 } | |
| 250 | |
| 251 DWORD WebDragDest::OnDrop(IDataObject* data_object, | |
| 252 DWORD key_state, | |
| 253 POINT cursor_position, | |
| 254 DWORD effect) { | |
| 255 DCHECK(current_rvh_); | |
| 256 if (current_rvh_ != web_contents_->GetRenderViewHost()) | |
| 257 OnDragEnter(data_object, key_state, cursor_position, effect); | |
| 258 | |
| 259 if (web_contents_->ShowingInterstitialPage()) | |
| 260 interstitial_drop_target_->OnDragOver(data_object, effect); | |
| 261 | |
| 262 if (web_contents_->ShowingInterstitialPage()) | |
| 263 return interstitial_drop_target_->OnDrop(data_object, effect); | |
| 264 | |
| 265 POINT client_pt = cursor_position; | |
| 266 ScreenToClient(GetHWND(), &client_pt); | |
| 267 web_contents_->GetRenderViewHost()->DragTargetDrop( | |
| 268 gfx::Point(client_pt.x, client_pt.y), | |
| 269 gfx::Point(cursor_position.x, cursor_position.y), | |
| 270 GetModifierFlags()); | |
| 271 | |
| 272 if (delegate_) | |
| 273 delegate_->OnDrop(data_object); | |
| 274 | |
| 275 current_rvh_ = NULL; | |
| 276 | |
| 277 // This isn't always correct, but at least it's a close approximation. | |
| 278 // For now, we always map a move to a copy to prevent potential data loss. | |
| 279 DWORD drop_effect = WebDragOpToWinDragOp(drag_cursor_); | |
| 280 DWORD result = drop_effect != DROPEFFECT_MOVE ? drop_effect : DROPEFFECT_COPY; | |
| 281 | |
| 282 drop_data_.reset(); | |
| 283 return result; | |
| 284 } | |
| 285 | |
| 286 } // namespace content | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 137403005:
Remove some code inside USE_AURA and OS_WIN ifdefs. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/