forked from mirrors/gecko-dev
139876e527
Now, `IMContextWrapper::Selection` and `IMMHandler::Selection` have same structure. Therefore, we can merge them into one place. This will help to fix bug 1259690 in the future. Differential Revision: https://phabricator.services.mozilla.com/D137421
84 lines
2.9 KiB
C++
84 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_ContentData_h
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#define mozilla_ContentData_h
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#include <sstream>
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#include "mozilla/Attributes.h"
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#include "mozilla/Debug.h"
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#include "mozilla/EventForwards.h"
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#include "mozilla/Maybe.h"
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#include "mozilla/WritingModes.h"
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#include "mozilla/widget/IMEData.h"
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/**
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* This file is intended for declaring classes which store DOM content data for
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* widget classes. Those data should be retrived by `WidgetQueryContentEvent`,
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* notified with `IMENotification`, or set assumed data as result of dispatching
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* widget events such as `WidgetKeyboardEvent`, `WidgetCompositionEvent`,
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* `WidgetSelectionEvent` etc.
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*/
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namespace mozilla {
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/**
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* ContentSelection stores DOM selection in flattend text by
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* ContentEventHandler. It should be retrieved with `eQuerySelectedText` event,
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* notified with `NOTIFY_IME_OF_SELECTION_CHANGE` or set by widget itself.
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*/
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class ContentSelection {
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public:
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using SelectionChangeDataBase =
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widget::IMENotification::SelectionChangeDataBase;
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ContentSelection() = default;
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explicit ContentSelection(const SelectionChangeDataBase& aSelectionChangeData)
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: mOffsetAndData(Some(aSelectionChangeData.ToUint32OffsetAndData())),
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mWritingMode(aSelectionChangeData.GetWritingMode()) {}
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explicit ContentSelection(const WidgetQueryContentEvent& aSelectedTextEvent);
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ContentSelection(uint32_t aOffset, const WritingMode& aWritingMode)
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: mOffsetAndData(Some(OffsetAndData<uint32_t>(
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aOffset, EmptyString(), OffsetAndDataFor::SelectedString))),
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mWritingMode(aWritingMode) {}
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const OffsetAndData<uint32_t>& OffsetAndDataRef() const {
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return mOffsetAndData.ref();
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}
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void Collapse(uint32_t aOffset) {
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if (mOffsetAndData.isSome()) {
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mOffsetAndData->Collapse(aOffset);
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} else {
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mOffsetAndData.emplace(aOffset, EmptyString(),
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OffsetAndDataFor::SelectedString);
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}
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}
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void Clear() {
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mOffsetAndData.reset();
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mWritingMode = WritingMode();
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}
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bool HasRange() const { return mOffsetAndData.isSome(); }
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const WritingMode& WritingModeRef() const { return mWritingMode; }
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friend std::ostream& operator<<(std::ostream& aStream,
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const ContentSelection& aContentSelection) {
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if (aContentSelection.HasRange()) {
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return aStream << "{ HasRange()=false }";
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}
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aStream << "{ mOffsetAndData=" << aContentSelection.mOffsetAndData
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<< ", mWritingMode=" << aContentSelection.mWritingMode << " }";
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return aStream;
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}
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private:
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Maybe<OffsetAndData<uint32_t>> mOffsetAndData;
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WritingMode mWritingMode;
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};
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} // namespace mozilla
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#endif // #ifndef mozilla_ContentData_h
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