1 #ifndef DALI_TOOLKIT_INTERNAL_TEXT_EDITOR_H
2 #define DALI_TOOLKIT_INTERNAL_TEXT_EDITOR_H
5 * Copyright (c) 2021 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.
22 #include <dali/devel-api/adaptor-framework/accessibility.h>
23 #include <dali/devel-api/adaptor-framework/clipboard-event-notifier.h>
24 #include <dali/devel-api/adaptor-framework/input-method-context.h>
25 #include <dali/public-api/animation/animation.h>
28 #include <dali-toolkit/devel-api/controls/control-devel.h>
29 #include <dali-toolkit/devel-api/controls/scroll-bar/scroll-bar.h>
30 #include <dali-toolkit/devel-api/controls/text-controls/text-editor-devel.h>
31 #include <dali-toolkit/internal/controls/control/control-data-impl.h>
32 #include <dali-toolkit/internal/text/decorator/text-decorator.h>
33 #include <dali-toolkit/internal/text/rendering/text-renderer.h>
34 #include <dali-toolkit/internal/text/text-anchor-control-interface.h>
35 #include <dali-toolkit/internal/text/text-control-interface.h>
36 #include <dali-toolkit/internal/text/text-controller.h>
37 #include <dali-toolkit/internal/text/text-editable-control-interface.h>
38 #include <dali-toolkit/internal/text/text-selectable-control-interface.h>
39 #include <dali-toolkit/internal/text/text-vertical-scroller.h>
40 #include <dali-toolkit/public-api/controls/control-impl.h>
41 #include <dali-toolkit/public-api/controls/text-controls/text-editor.h>
50 * @brief A control which renders a long text string with styles.
52 class TextEditor : public Control, public Text::ControlInterface, public Text::EditableControlInterface, public Text::SelectableControlInterface, public Text::AnchorControlInterface
56 * @copydoc Dali::Toollkit::TextEditor::New()
58 static Toolkit::TextEditor New();
63 * @brief Called when a property of an object of this type is set.
65 * @param[in] object The object whose property is set.
66 * @param[in] index The property index.
67 * @param[in] value The new property value.
69 static void SetProperty(BaseObject* object, Property::Index index, const Property::Value& value);
72 * @brief Called to retrieve a property of an object of this type.
74 * @param[in] object The object whose property is to be retrieved.
75 * @param[in] index The property index.
76 * @return The current value of the property.
78 static Property::Value GetProperty(BaseObject* object, Property::Index index);
81 * @copydoc Dali::Toollkit::TextEditor::GetInputMethodContext()
83 InputMethodContext GetInputMethodContext();
86 * @copydoc Dali::Toollkit::TextEditor::MaxLengthReachedSignal()
88 DevelTextEditor::MaxLengthReachedSignalType& MaxLengthReachedSignal();
91 * @copydoc Dali::Toollkit::TextEditor::AnchorClickedSignal()
93 DevelTextEditor::AnchorClickedSignalType& AnchorClickedSignal();
96 * @copydoc Dali::Toollkit::TextEditor::InputFilteredSignal()
98 DevelTextEditor::InputFilteredSignalType& InputFilteredSignal();
101 * Connects a callback function with the object's signals.
102 * @param[in] object The object providing the signal.
103 * @param[in] tracker Used to disconnect the signal.
104 * @param[in] signalName The signal to connect to.
105 * @param[in] functor A newly allocated FunctorDelegate.
106 * @return True if the signal was connected.
107 * @post If a signal was connected, ownership of functor was passed to CallbackBase. Otherwise the caller is responsible for deleting the unused functor.
109 static bool DoConnectSignal(BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor);
112 * @brief Gets text controller
114 * @return The text controller
116 Text::ControllerPtr GetTextController();
119 * @copydoc TextEditor::TextChangedSignal()
121 Toolkit::TextEditor::TextChangedSignalType& TextChangedSignal();
124 * @copydoc TextEditor::TextChangedSignal()
126 Toolkit::TextEditor::InputStyleChangedSignalType& InputStyleChangedSignal();
129 * @copydoc TextEditor::ScrollStateChangedSignal()
131 Toolkit::TextEditor::ScrollStateChangedSignalType& ScrollStateChangedSignal();
133 private: // From Control
135 * @copydoc Control::OnInitialize()
137 void OnInitialize() override;
140 * @copydoc Control::OnStyleChange()
142 void OnStyleChange(Toolkit::StyleManager styleManager, StyleChange::Type change) override;
145 * @copydoc Control::GetNaturalSize()
147 Vector3 GetNaturalSize() override;
150 * @copydoc Control::GetHeightForWidth()
152 float GetHeightForWidth(float width) override;
155 * @copydoc Control::OnInitialize()
157 void OnRelayout(const Vector2& size, RelayoutContainer& container) override;
160 * @copydoc Control::OnKeyInputFocusGained()
162 void OnKeyInputFocusGained() override;
165 * @copydoc Control::OnKeyInputFocusLost()
167 void OnKeyInputFocusLost() override;
170 * @copydoc Control::OnAccessibilityActivated()
172 bool OnAccessibilityActivated() override;
175 * @copydoc Control::OnTap()
177 void OnTap(const TapGesture& tap) override;
180 * @copydoc Control::OnPan()
182 void OnPan(const PanGesture& gesture) override;
185 * @copydoc Control::OnLongPress()
187 void OnLongPress(const LongPressGesture& gesture) override;
190 * @copydoc Control::OnSceneConnection()
192 void OnSceneConnection(int depth) override;
195 * @copydoc Dali::CustomActorImpl::OnKeyEvent(const KeyEvent&)
197 bool OnKeyEvent(const KeyEvent& event) override;
199 // From ControlInterface
202 * @copydoc Text::ControlInterface::RequestTextRelayout()
204 void RequestTextRelayout() override;
206 // From EditableControlInterface
209 * @copydoc Text::EditableControlInterface::TextChanged()
211 void TextInserted(unsigned int position, unsigned int length, const std::string& content) override;
214 * @copydoc Text::EditableControlInterface::TextDeleted()
216 void TextDeleted(unsigned int position, unsigned int length, const std::string& content) override;
219 * @copydoc Text::EditableControlInterface::CursorMoved()
221 void CursorMoved(unsigned int position) override;
224 * @copydoc Text::EditableControlInterface::TextChanged()
226 void TextChanged(bool immediate) override;
229 * @copydoc Text::EditableControlInterface::MaxLengthReached()
231 void MaxLengthReached() override;
234 * @copydoc Text::EditableControlInterface::InputStyleChanged()
236 void InputStyleChanged(Text::InputStyle::Mask inputStyleMask) override;
239 * @copydoc Text::EditableControlInterface::AddDecoration()
241 void AddDecoration(Actor& actor, bool needsClipping) override;
244 * @copydoc Text::EditableControlInterface::InputFiltered()
246 void InputFiltered(Toolkit::InputFilter::Property::Type type) override;
249 * @copydoc Text::EditableControlInterface::GetControlBackgroundColor()
251 void GetControlBackgroundColor(Vector4& color) const override;
253 // From SelectableControlInterface
256 * @copydoc Text::SelectableControlInterface::SetTextSelectionRange()
258 void SetTextSelectionRange(const uint32_t* start, const uint32_t* end) override;
261 * @copydoc Text::SelectableControlInterface::GetTextSelectionRange()
263 Uint32Pair GetTextSelectionRange() const override;
266 * @copydoc Text::SelectableControlInterface::SelectWholeText()
268 void SelectWholeText() override;
271 * @copydoc Text::SelectableControlInterface::SelectNone()
273 void SelectNone() override;
276 * @copydoc Dali::Toolkit::DevelTextEditor::ScrollBy()
278 void ScrollBy(Vector2 Scroll);
281 * @brief Get Horizontal scroll position of TextEditor.
283 * @return Horizontal scroll position (in pixels) of TextEditor.
285 float GetHorizontalScrollPosition();
288 * @brief Get Vertical scroll position of TextEditor.
290 * @return Vertical scroll position (in pixels) of TextEditor.
292 float GetVerticalScrollPosition();
295 * @copydoc Text::SelectableControlInterface::GetSelectedText()
297 string GetSelectedText() const override;
300 * @copydoc Text::EditableControlInterface::IsEditable()
302 bool IsEditable() const override;
305 * @copydoc Text::EditableControlInterface::SetEditable()
307 void SetEditable(bool editable) override;
309 // From AnchorControlInterface
312 * @copydoc Text::AnchorControlInterface::AnchorClicked()
314 void AnchorClicked(const std::string& href) override;
316 private: // Implementation
318 * @copydoc Dali::Toolkit::Text::Controller::(InputMethodContext& inputMethodContext, const InputMethodContext::EventData& inputMethodContextEvent)
320 InputMethodContext::CallbackData OnInputMethodContextEvent(InputMethodContext& inputMethodContext, const InputMethodContext::EventData& inputMethodContextEvent);
323 * @brief Callback when Clipboard signals an item should be pasted
324 * @param[in] clipboard handle to Clipboard Event Notifier
326 void OnClipboardTextSelected(ClipboardEventNotifier& clipboard);
329 * @brief Get a Property Map for the image used for the required Handle Image
330 * @param[out] value the returned image property
331 * @param[in] handleType the type of handle
332 * @param[in] handleImageType the type of image for the given handleType
334 void GetHandleImagePropertyValue(Property::Value& value, Text::HandleType handleType, Text::HandleImageType handleImageType);
337 * @brief Callback when keyboard is shown/hidden.
339 * @param[in] keyboardShown True if keyboard is shown.
341 void KeyboardStatusChanged(bool keyboardShown);
344 * @brief update scroll bar position
346 * If text scroll is occurred, create or update scroll bar position
348 void UpdateScrollBar();
351 * @brief Callback when TextEditor is touched
353 * @param[in] actor TextEditor touched
354 * @param[in] touch Touch information
356 bool OnTouched(Actor actor, const TouchEvent& touch);
359 * @brief Callbacks called on idle.
361 * If there are notifications of change of input style on the queue, Toolkit::TextEditor::InputStyleChangedSignal() are emitted.
366 * @brief Emits TextChanged signal.
368 void EmitTextChangedSignal();
371 * @brief set RenderActor's position with new scrollPosition
373 * Apply updated scroll position or start scroll animation if VerticalScrollAnimation is enabled
375 void ApplyScrollPosition();
378 * @brief Callback function for ScrollBar indicator animation finished signal
380 * Emit ScrollBarStateChanged Signal and toggle mScrollStarted flag to false
382 void OnScrollIndicatorAnimationFinished(Animation& animation);
385 * @brief Callback function for when the layout is changed.
386 * @param[in] actor The actor whose layoutDirection is changed.
387 * @param[in] type The layoutDirection.
389 void OnLayoutDirectionChanged(Actor actor, LayoutDirection::Type type);
392 * Construct a new TextEditor.
397 * A reference counted object may only be deleted by calling Unreference()
399 virtual ~TextEditor();
401 // Undefined copy constructor and assignment operators
402 TextEditor(const TextEditor&);
403 TextEditor& operator=(const TextEditor& rhs);
406 * @brief Resize actor to the given size.
408 * @param[in] actor The actor to be resized.
409 * @param[in] size Size to change.
411 void ResizeActor(Actor& actor, const Vector2& size);
414 * @brief Render view, create and attach actor(s) to this text editor.
416 void RenderText(Text::Controller::UpdateTextType updateTextType);
418 // Connection needed to re-render text, when a text editor returns to the scene.
419 void OnSceneConnect(Dali::Actor actor);
423 Toolkit::TextEditor::TextChangedSignalType mTextChangedSignal;
424 Toolkit::TextEditor::InputStyleChangedSignalType mInputStyleChangedSignal;
425 Toolkit::TextEditor::ScrollStateChangedSignalType mScrollStateChangedSignal;
426 Toolkit::DevelTextEditor::MaxLengthReachedSignalType mMaxLengthReachedSignal;
427 Toolkit::DevelTextEditor::AnchorClickedSignalType mAnchorClickedSignal;
428 Toolkit::DevelTextEditor::InputFilteredSignalType mInputFilteredSignal;
430 InputMethodContext mInputMethodContext;
431 Text::ControllerPtr mController;
432 Text::RendererPtr mRenderer;
433 Text::DecoratorPtr mDecorator;
434 Text::TextVerticalScrollerPtr mTextVerticalScroller;
435 Toolkit::Control mStencil;
436 Toolkit::ScrollBar mScrollBar;
437 Dali::Animation mAnimation; ///< Scroll indicator Show/Hide Animation.
438 Dali::TimePeriod mAnimationPeriod;
439 std::vector<Actor> mClippingDecorationActors; ///< Decoration actors which need clipping.
440 Dali::InputMethodOptions mInputMethodOptions;
442 Actor mRenderableActor;
444 Actor mBackgroundActor;
445 CallbackBase* mIdleCallback;
447 float mAlignmentOffset;
448 float mScrollAnimationDuration;
450 int mRenderingBackend;
451 bool mHasBeenStaged : 1;
452 bool mScrollAnimationEnabled : 1;
453 bool mScrollBarEnabled : 1;
454 bool mScrollStarted : 1;
455 bool mTextChanged : 1; ///< If true, emits TextChangedSignal in next OnRelayout().
458 * @brief This structure is to connect TextEditor with Accessible functions.
460 struct AccessibleImpl : public DevelControl::AccessibleImpl,
461 public virtual Dali::Accessibility::Text,
462 public virtual Dali::Accessibility::EditableText
464 using DevelControl::AccessibleImpl::AccessibleImpl;
467 * @copydoc Dali::Accessibility::Accessible::GetName()
469 std::string GetName() override;
472 * @copydoc Dali::Accessibility::Text::GetText()
474 std::string GetText(size_t startOffset, size_t endOffset) override;
477 * @copydoc Dali::Accessibility::Text::GetCharacterCount()
479 size_t GetCharacterCount() override;
482 * @copydoc Dali::Accessibility::Text::GetCursorOffset()
484 size_t GetCursorOffset() override;
487 * @copydoc Dali::Accessibility::Text::SetCursorOffset()
489 bool SetCursorOffset(size_t offset) override;
492 * @copydoc Dali::Accessibility::Text::GetTextAtOffset()
494 Accessibility::Range GetTextAtOffset(size_t offset, Accessibility::TextBoundary boundary) override;
497 * @copydoc Dali::Accessibility::Text::GetRangeOfSelection()
499 Accessibility::Range GetRangeOfSelection(size_t selectionIndex) override;
502 * @copydoc Dali::Accessibility::Text::RemoveSelection()
504 bool RemoveSelection(size_t selectionIndex) override;
507 * @copydoc Dali::Accessibility::Text::SetRangeOfSelection()
509 bool SetRangeOfSelection(size_t selectionIndex, size_t startOffset, size_t endOffset) override;
512 * @copydoc Dali::Accessibility::EditableText::CopyText()
514 bool CopyText(size_t startPosition, size_t endPosition) override;
517 * @copydoc Dali::Accessibility::EditableText::CutText()
519 bool CutText(size_t startPosition, size_t endPosition) override;
522 * @copydoc Dali::Accessibility::Accessible::GetStates()
524 Accessibility::States CalculateStates() override;
527 * @copydoc Dali::Accessibility::EditableText::InsertText()
529 bool InsertText(size_t startPosition, std::string text) override;
532 * @copydoc Dali::Accessibility::EditableText::SetTextContents()
534 bool SetTextContents(std::string newContents) override;
537 * @copydoc Dali::Accessibility::EditableText::DeleteText()
539 bool DeleteText(size_t startPosition, size_t endPosition) override;
543 } // namespace Internal
545 // Helpers for public-api forwarding methods
547 inline Toolkit::Internal::TextEditor& GetImpl(Toolkit::TextEditor& textEditor)
549 DALI_ASSERT_ALWAYS(textEditor);
551 Dali::RefObject& handle = textEditor.GetImplementation();
553 return static_cast<Toolkit::Internal::TextEditor&>(handle);
556 inline const Toolkit::Internal::TextEditor& GetImpl(const Toolkit::TextEditor& textEditor)
558 DALI_ASSERT_ALWAYS(textEditor);
560 const Dali::RefObject& handle = textEditor.GetImplementation();
562 return static_cast<const Toolkit::Internal::TextEditor&>(handle);
565 } // namespace Toolkit
569 #endif // DALI_TOOLKIT_INTERNAL_TEXT_EDITOR_H