1 #ifndef DALI_TOOLKIT_WEB_VIEW_H
2 #define DALI_TOOLKIT_WEB_VIEW_H
5 * Copyright (c) 2020 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
25 #include <dali/devel-api/adaptor-framework/web-engine-plugin.h>
26 #include <dali-toolkit/public-api/controls/control.h>
33 class WebBackForwardList;
35 class WebCookieManager;
38 namespace Internal DALI_INTERNAL
41 } // namespace DALI_INTERNAL
44 * @addtogroup dali_toolkit_controls_web_view
49 * @brief WebView is a control for displaying web content.
51 * This enables embedding web pages in the application.
53 * For working WebView, a web engine plugin for a platform should be provided.
56 class DALI_TOOLKIT_API WebView : public Control
61 * @brief Enumeration for the start and end property ranges for this control.
65 PROPERTY_START_INDEX = Control::CONTROL_PROPERTY_END_INDEX + 1,
66 PROPERTY_END_INDEX = PROPERTY_START_INDEX + 1000,
70 * @brief Enumeration for the instance of properties belonging to the WebView class.
77 * @brief The url to load.
78 * @details name "url", type Property::STRING.
80 URL = PROPERTY_START_INDEX,
83 * @brief The user agent string.
84 * @details name "userAgent", type Property::STRING.
89 * @brief The current position of scroll.
90 * @details name "scrollPosition", type Property::VECTOR2.
95 * @brief The current size of scroll.
96 * @details name "scrollSize", type Property::VECTOR2.
97 * @note The value is read-only.
102 * @brief The current size of content.
103 * @details name "contentSize", type Property::VECTOR2.
104 * @note The value is read-only.
109 * @brief The title of web page.
110 * @details name "title", type Property::STRING.
111 * @note The value is read-only.
116 * @brief Whether video hole is enabled or not.
117 * @details name "videoHoleEnabled", type Property::BOOLEAN.
118 * @note The value is read-only.
125 * @brief Enumeration for indicating error code of page loading.
127 enum class LoadErrorCode
129 UNKNOWN = 0, ///< Unknown.
130 CANCELED, ///< User canceled.
131 CANT_SUPPORT_MIMETYPE, ///< Can't show the page for this MIME type.
132 FAILED_FILE_IO, ///< File IO error.
133 CANT_CONNECT, ///< Cannot connect to the network.
134 CANT_LOOKUP_HOST, ///< Fail to look up host from the DNS.
135 FAILED_TLS_HANDSHAKE, ///< Fail to SSL/TLS handshake.
136 INVALID_CERTIFICATE, ///< Received certificate is invalid.
137 REQUEST_TIMEOUT, ///< Connection timeout.
138 TOO_MANY_REDIRECTS, ///< Too many redirects.
139 TOO_MANY_REQUESTS, ///< Too many requests during this load.
140 BAD_URL, ///< Malformed URL.
141 UNSUPPORTED_SCHEME, ///< Unsupported scheme.
142 AUTHENTICATION, ///< User authentication failed on the server.
143 INTERNAL_SERVER ///< Web server has an internal server error.
148 * @brief Creates an initialized WebView.
149 * @return A handle to a newly allocated Dali WebView
151 * @note WebView will not display anything
153 static WebView New();
156 * @brief Creates an initialized WebView.
158 * @param [in] locale The locale of Web
159 * @param [in] timezoneId The timezoneId of Web
161 static WebView New(const std::string& locale, const std::string& timezoneId);
164 * @brief Creates an initialized WebView.
166 * @param [in] argc The count of arguments of Applications
167 * @param [in] argv The string array of arguments of Applications
169 static WebView New( int argc, char** argv );
172 * @brief Creates an uninitialized WebView.
179 * This is non-virtual since derived Handel types must not contain data or virtual methods.
184 * @brief Copy constructor.
186 * @param[in] WebView WebView to copy. The copied WebView will point at the same implementation
188 WebView(const WebView& WebView);
191 * @brief Assignment operator.
193 * @param[in] WebView The WebView to assign from
194 * @return The updated WebView
196 WebView& operator=(const WebView& WebView);
199 * @brief Downcasts a handle to WebView handle.
201 * If handle points to a WebView, the downcast produces valid handle.
202 * If not, the returned handle is left uninitialized.
204 * @param[in] handle Handle to an object
205 * @return Handle to a WebView or an uninitialized handle
207 static WebView DownCast(BaseHandle handle);
210 * @brief Get WebSettings of WebEngine.
212 Dali::Toolkit::WebSettings* GetSettings() const;
215 * @brief Get WebContext of WebEngine.
217 Dali::Toolkit::WebContext* GetContext() const;
220 * @brief Get CookieManager of WebEngine.
222 Dali::Toolkit::WebCookieManager* GetCookieManager() const;
225 * @brief Get WebBackForwardList of WebEngine.
227 Dali::Toolkit::WebBackForwardList* GetBackForwardList() const;
230 * @brief Gets web engine plugin.
232 Dali::WebEnginePlugin* GetPlugin() const;
235 * @brief Get favicon of web page.
237 * @return Handle to a favicon
239 Dali::Toolkit::ImageView GetFavicon() const;
242 * @brief Loads a web page based on a given URL.
244 * @param [in] url The URL of the resource to load
246 void LoadUrl(const std::string& url);
249 * @brief Loads a given string as web contents.
251 * @param [in] htmlString The string to use as the contents of the web page
253 void LoadHtmlString(const std::string& htmlString);
256 * @brief Reloads the Web.
261 * @brief Stops loading web contents on the current page.
266 * @brief Suspends the operation associated with the view.
271 * @brief Resumes the operation associated with the view object after calling Suspend().
276 * @brief Scrolls the webpage of view by deltaX and deltaY.
277 * @param[in] deltaX The delta x of scroll
278 * @param[in] deltaY The delta y of scroll
280 void ScrollBy( int deltaX, int deltaY );
283 * @brief Returns whether forward is possible.
285 * @return True if forward is possible, false otherwise
290 * @brief Goes forward in the navigation history.
295 * @brief Returns whether backward is possible.
297 * @return True if backward is possible, false otherwise
302 * @brief Goes back in the navigation history.
307 * @brief Evaluates JavaScript code represented as a string.
309 * @param[in] script The JavaScript code
310 * @param[in] resultHandler The callback function to be called by the JavaScript runtime. This carries evaluation result.
312 void EvaluateJavaScript(const std::string& script, Dali::WebEnginePlugin::JavaScriptMessageHandlerCallback resultHandler);
315 * @brief Evaluates JavaScript code represented as a string.
317 * @param[in] script The JavaScript code
319 void EvaluateJavaScript(const std::string& script);
322 * @brief Inject a JavaScript object with a message handler into the WebView.
324 * @note The injected object will appear in the JavaScript context to be loaded next.
330 * webview.AddJavaScriptMessageHandler( "myObject", []( const std::string& message ) {
331 * printf( "Received a message from JS: %s", message.c_str() );
334 * // Start WebView by loading URL
335 * webview.LoadUrl( url );
339 * myObject.postMessage( "Hello World!" ); // "Received a message from JS: Hello World!"
342 * @param[in] exposedObjectName The name of exposed object
343 * @param[in] handler The callback function
345 void AddJavaScriptMessageHandler(const std::string& exposedObjectName, Dali::WebEnginePlugin::JavaScriptMessageHandlerCallback handler);
348 * @brief Clears all tiles resources of Web.
350 void ClearAllTilesResources();
353 * @brief Clears the history of Web.
358 * @brief Set or unset TTS focus of the webview.
359 * @param[in] focused True if it is gained, false lost.
360 * @note It only works when the webview does not have keyinput focus. If it has keyinput focus, the TTS focus is set automatically.
362 void SetTtsFocus(bool focused);
365 * @brief Callback to be called when page loading is started.
367 * @param[in] callback
369 void RegisterPageLoadStartedCallback(Dali::WebEnginePlugin::WebEnginePageLoadCallback callback);
372 * @brief Callback to be called when page loading is finished.
374 * @param[in] callback
376 void RegisterPageLoadFinishedCallback(Dali::WebEnginePlugin::WebEnginePageLoadCallback callback);
379 * @brief Callback to be called when an error occurs in page loading.
381 * @param[in] callback
383 void RegisterPageLoadErrorCallback(Dali::WebEnginePlugin::WebEnginePageLoadErrorCallback callback);
386 * @brief Callback to be called when scroll edge is reached.
388 * @param[in] callback
390 void RegisterScrollEdgeReachedCallback(Dali::WebEnginePlugin::WebEngineScrollEdgeReachedCallback callback);
393 * @brief Callback to be called when url is changed.
395 * @param[in] callback
397 void RegisterUrlChangedCallback(Dali::WebEnginePlugin::WebEngineUrlChangedCallback callback);
400 * @brief Callback to be called when navigation policy would be decided.
402 * @param[in] callback
404 void RegisterNavigationPolicyDecidedCallback(Dali::WebEnginePlugin::WebEngineNavigationPolicyDecidedCallback callback);
407 * @brief Callback to be called when a new window would be created.
409 * @param[in] callback
411 void RegisterNewWindowCreatedCallback(Dali::WebEnginePlugin::WebEngineNewWindowCreatedCallback callback);
414 * @brief Get a plain text of current web page asynchronously.
416 * @param[in] callback The callback function called asynchronously.
418 void GetPlainTextAsynchronously(Dali::WebEnginePlugin::PlainTextReceivedCallback callback);
420 public: // Not intended for application developers
423 * @brief Creates a handle using the Toolkit::Internal implementation.
425 * @param[in] implementation The WebView implementation
427 DALI_INTERNAL WebView(Internal::WebView& implementation);
430 * @brief Allows the creation of this WebView from an Internal::CustomActor pointer.
432 * @param[in] internal A pointer to the internal CustomActor
434 explicit DALI_INTERNAL WebView(Dali::Internal::CustomActor* internal);
442 } // namespace Toolkit
446 #endif // DALI_TOOLKIT_WEB_VIEW_H