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| 1 /* | |
| 2 * Copyright (C) 2009 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #ifndef WebWidget_h | |
| 32 #define WebWidget_h | |
| 33 | |
| 34 #include "WebCanvas.h" | |
| 35 #include "WebCommon.h" | |
| 36 #include "WebCompositionCommand.h" | |
| 37 #include "WebTextDirection.h" | |
| 38 | |
| 39 namespace WebKit { | |
| 40 | |
| 41 class WebInputEvent; | |
| 42 class WebString; | |
| 43 struct WebRect; | |
| 44 struct WebSize; | |
| 45 | |
| 46 class WebWidget { | |
| 47 public: | |
| 48 // This method closes and deletes the WebWidget. | |
| 49 virtual void close() = 0; | |
| 50 | |
| 51 // Returns the current size of the WebWidget. | |
| 52 virtual WebSize size() = 0; | |
| 53 | |
| 54 // Called to resize the WebWidget. | |
| 55 virtual void resize(const WebSize&) = 0; | |
| 56 | |
| 57 // Called to layout the WebWidget. This MUST be called before Paint, | |
| 58 // and it may result in calls to WebWidgetClient::didInvalidateRect. | |
| 59 virtual void layout() = 0; | |
| 60 | |
| 61 // Called to paint the specified region of the WebWidget onto the given | |
| 62 // canvas. You MUST call Layout before calling this method. It is | |
| 63 // okay to call paint multiple times once layout has been called, | |
| 64 // assuming no other changes are made to the WebWidget (e.g., once | |
| 65 // events are processed, it should be assumed that another call to | |
| 66 // layout is warranted before painting again). | |
| 67 virtual void paint(WebCanvas*, const WebRect&) = 0; | |
| 68 | |
| 69 // Called to inform the WebWidget of an input event. Returns true if | |
| 70 // the event has been processed, false otherwise. | |
| 71 virtual bool handleInputEvent(const WebInputEvent&) = 0; | |
| 72 | |
| 73 // Called to inform the WebWidget that mouse capture was lost. | |
| 74 virtual void mouseCaptureLost() = 0; | |
| 75 | |
| 76 // Called to inform the WebWidget that it has gained or lost keyboard focus. | |
| 77 virtual void setFocus(bool) = 0; | |
| 78 | |
| 79 // Called to inform the WebWidget of a composition event. | |
| 80 virtual bool handleCompositionEvent(WebCompositionCommand command, | |
| 81 int cursorPosition, | |
| 82 int targetStart, | |
| 83 int targetEnd, | |
| 84 const WebString& text) = 0; | |
| 85 | |
| 86 // Retrieve the status of this WebWidget required by IME APIs. Upon | |
| 87 // success enabled and caretBounds are set. | |
| 88 virtual bool queryCompositionStatus(bool* enabled, WebRect* caretBounds) = 0; | |
| 89 | |
| 90 // Changes the text direction of the selected input node. | |
| 91 virtual void setTextDirection(WebTextDirection) = 0; | |
| 92 | |
| 93 protected: | |
| 94 ~WebWidget() { } | |
| 95 }; | |
| 96 | |
| 97 } // namespace WebKit | |
| 98 | |
| 99 #endif | |
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