зеркало из https://github.com/mozilla/gecko-dev.git
1028 строки
35 KiB
C++
1028 строки
35 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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 TSFTextStore_h_
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#define TSFTextStore_h_
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#include "mozilla/RefPtr.h"
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#include "nsString.h"
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#include "nsCOMPtr.h"
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#include "nsIWidget.h"
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#include "nsWindowBase.h"
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#include "WinUtils.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/StaticPtr.h"
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#include "mozilla/TextEventDispatcher.h"
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#include "mozilla/TextRange.h"
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#include "mozilla/WindowsVersion.h"
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#include <msctf.h>
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#include <textstor.h>
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// GUID_PROP_INPUTSCOPE is declared in inputscope.h using INIT_GUID.
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// With initguid.h, we get its instance instead of extern declaration.
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#ifdef INPUTSCOPE_INIT_GUID
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#include <initguid.h>
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#endif
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#ifdef TEXTATTRS_INIT_GUID
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#include <tsattrs.h>
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#endif
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#include <inputscope.h>
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// TSF InputScope, for earlier SDK 8
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#define IS_SEARCH static_cast<InputScope>(50)
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struct ITfThreadMgr;
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struct ITfDocumentMgr;
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struct ITfDisplayAttributeMgr;
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struct ITfCategoryMgr;
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class nsWindow;
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namespace mozilla {
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namespace widget {
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struct MSGResult;
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/*
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* Text Services Framework text store
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*/
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class TSFTextStore final : public ITextStoreACP
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, public ITfContextOwnerCompositionSink
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, public ITfMouseTrackerACP
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{
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private:
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typedef IMENotification::SelectionChangeDataBase SelectionChangeDataBase;
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typedef IMENotification::SelectionChangeData SelectionChangeData;
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typedef IMENotification::TextChangeDataBase TextChangeDataBase;
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typedef IMENotification::TextChangeData TextChangeData;
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public: /*IUnknown*/
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STDMETHODIMP QueryInterface(REFIID, void**);
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NS_INLINE_DECL_IUNKNOWN_REFCOUNTING(TSFTextStore)
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public: /*ITextStoreACP*/
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STDMETHODIMP AdviseSink(REFIID, IUnknown*, DWORD);
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STDMETHODIMP UnadviseSink(IUnknown*);
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STDMETHODIMP RequestLock(DWORD, HRESULT*);
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STDMETHODIMP GetStatus(TS_STATUS*);
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STDMETHODIMP QueryInsert(LONG, LONG, ULONG, LONG*, LONG*);
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STDMETHODIMP GetSelection(ULONG, ULONG, TS_SELECTION_ACP*, ULONG*);
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STDMETHODIMP SetSelection(ULONG, const TS_SELECTION_ACP*);
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STDMETHODIMP GetText(LONG, LONG, WCHAR*, ULONG, ULONG*, TS_RUNINFO*, ULONG,
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ULONG*, LONG*);
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STDMETHODIMP SetText(DWORD, LONG, LONG, const WCHAR*, ULONG, TS_TEXTCHANGE*);
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STDMETHODIMP GetFormattedText(LONG, LONG, IDataObject**);
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STDMETHODIMP GetEmbedded(LONG, REFGUID, REFIID, IUnknown**);
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STDMETHODIMP QueryInsertEmbedded(const GUID*, const FORMATETC*, BOOL*);
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STDMETHODIMP InsertEmbedded(DWORD, LONG, LONG, IDataObject*, TS_TEXTCHANGE*);
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STDMETHODIMP RequestSupportedAttrs(DWORD, ULONG, const TS_ATTRID*);
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STDMETHODIMP RequestAttrsAtPosition(LONG, ULONG, const TS_ATTRID*, DWORD);
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STDMETHODIMP RequestAttrsTransitioningAtPosition(LONG, ULONG,
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const TS_ATTRID*, DWORD);
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STDMETHODIMP FindNextAttrTransition(LONG, LONG, ULONG, const TS_ATTRID*,
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DWORD, LONG*, BOOL*, LONG*);
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STDMETHODIMP RetrieveRequestedAttrs(ULONG, TS_ATTRVAL*, ULONG*);
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STDMETHODIMP GetEndACP(LONG*);
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STDMETHODIMP GetActiveView(TsViewCookie*);
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STDMETHODIMP GetACPFromPoint(TsViewCookie, const POINT*, DWORD, LONG*);
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STDMETHODIMP GetTextExt(TsViewCookie, LONG, LONG, RECT*, BOOL*);
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STDMETHODIMP GetScreenExt(TsViewCookie, RECT*);
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STDMETHODIMP GetWnd(TsViewCookie, HWND*);
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STDMETHODIMP InsertTextAtSelection(DWORD, const WCHAR*, ULONG, LONG*, LONG*,
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TS_TEXTCHANGE*);
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STDMETHODIMP InsertEmbeddedAtSelection(DWORD, IDataObject*, LONG*, LONG*,
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TS_TEXTCHANGE*);
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public: /*ITfContextOwnerCompositionSink*/
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STDMETHODIMP OnStartComposition(ITfCompositionView*, BOOL*);
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STDMETHODIMP OnUpdateComposition(ITfCompositionView*, ITfRange*);
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STDMETHODIMP OnEndComposition(ITfCompositionView*);
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public: /*ITfMouseTrackerACP*/
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STDMETHODIMP AdviseMouseSink(ITfRangeACP*, ITfMouseSink*, DWORD*);
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STDMETHODIMP UnadviseMouseSink(DWORD);
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public:
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static void Initialize(void);
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static void Terminate(void);
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static bool ProcessRawKeyMessage(const MSG& aMsg);
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static void ProcessMessage(nsWindowBase* aWindow, UINT aMessage,
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WPARAM& aWParam, LPARAM& aLParam,
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MSGResult& aResult);
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static void SetIMEOpenState(bool);
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static bool GetIMEOpenState(void);
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static void CommitComposition(bool aDiscard)
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{
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NS_ASSERTION(IsInTSFMode(), "Not in TSF mode, shouldn't be called");
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if (!sEnabledTextStore) {
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return;
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}
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RefPtr<TSFTextStore> textStore(sEnabledTextStore);
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textStore->CommitCompositionInternal(aDiscard);
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}
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static void SetInputContext(nsWindowBase* aWidget,
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const InputContext& aContext,
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const InputContextAction& aAction);
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static nsresult OnFocusChange(bool aGotFocus,
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nsWindowBase* aFocusedWidget,
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const InputContext& aContext);
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static nsresult OnTextChange(const IMENotification& aIMENotification)
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{
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NS_ASSERTION(IsInTSFMode(), "Not in TSF mode, shouldn't be called");
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if (!sEnabledTextStore) {
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return NS_OK;
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}
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RefPtr<TSFTextStore> textStore(sEnabledTextStore);
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return textStore->OnTextChangeInternal(aIMENotification);
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}
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static nsresult OnSelectionChange(const IMENotification& aIMENotification)
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{
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NS_ASSERTION(IsInTSFMode(), "Not in TSF mode, shouldn't be called");
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if (!sEnabledTextStore) {
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return NS_OK;
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}
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RefPtr<TSFTextStore> textStore(sEnabledTextStore);
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return textStore->OnSelectionChangeInternal(aIMENotification);
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}
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static nsresult OnLayoutChange()
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{
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NS_ASSERTION(IsInTSFMode(), "Not in TSF mode, shouldn't be called");
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if (!sEnabledTextStore) {
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return NS_OK;
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}
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RefPtr<TSFTextStore> textStore(sEnabledTextStore);
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return textStore->OnLayoutChangeInternal();
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}
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static nsresult OnUpdateComposition()
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{
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NS_ASSERTION(IsInTSFMode(), "Not in TSF mode, shouldn't be called");
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if (!sEnabledTextStore) {
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return NS_OK;
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}
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RefPtr<TSFTextStore> textStore(sEnabledTextStore);
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return textStore->OnUpdateCompositionInternal();
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}
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static nsresult OnMouseButtonEvent(const IMENotification& aIMENotification)
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{
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NS_ASSERTION(IsInTSFMode(), "Not in TSF mode, shouldn't be called");
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if (!sEnabledTextStore) {
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return NS_OK;
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}
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RefPtr<TSFTextStore> textStore(sEnabledTextStore);
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return textStore->OnMouseButtonEventInternal(aIMENotification);
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}
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static nsIMEUpdatePreference GetIMEUpdatePreference();
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// Returns the address of the pointer so that the TSF automatic test can
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// replace the system object with a custom implementation for testing.
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// XXX TSF doesn't work now. Should we remove it?
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static void* GetNativeData(uint32_t aDataType)
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{
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switch (aDataType) {
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case NS_NATIVE_TSF_THREAD_MGR:
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Initialize(); // Apply any previous changes
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return static_cast<void*>(&sThreadMgr);
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case NS_NATIVE_TSF_CATEGORY_MGR:
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return static_cast<void*>(&sCategoryMgr);
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case NS_NATIVE_TSF_DISPLAY_ATTR_MGR:
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return static_cast<void*>(&sDisplayAttrMgr);
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default:
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return nullptr;
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}
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}
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static ITfMessagePump* GetMessagePump()
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{
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return sMessagePump;
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}
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static void* GetThreadManager()
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{
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return static_cast<void*>(sThreadMgr);
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}
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static bool ThinksHavingFocus()
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{
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return (sEnabledTextStore && sEnabledTextStore->mContext);
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}
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static bool IsInTSFMode()
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{
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return sThreadMgr != nullptr;
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}
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static bool IsComposing()
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{
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return (sEnabledTextStore && sEnabledTextStore->mComposition.IsComposing());
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}
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static bool IsComposingOn(nsWindowBase* aWidget)
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{
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return (IsComposing() && sEnabledTextStore->mWidget == aWidget);
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}
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static bool IsIMM_IME();
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#ifdef DEBUG
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// Returns true when keyboard layout has IME (TIP).
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static bool CurrentKeyboardLayoutHasIME();
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#endif // #ifdef DEBUG
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protected:
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TSFTextStore();
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~TSFTextStore();
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static bool CreateAndSetFocus(nsWindowBase* aFocusedWidget,
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const InputContext& aContext);
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static void MarkContextAsKeyboardDisabled(ITfContext* aContext);
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static void MarkContextAsEmpty(ITfContext* aContext);
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bool Init(nsWindowBase* aWidget, const InputContext& aContext);
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void Destroy();
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void ReleaseTSFObjects();
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bool IsReadLock(DWORD aLock) const
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{
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return (TS_LF_READ == (aLock & TS_LF_READ));
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}
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bool IsReadWriteLock(DWORD aLock) const
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{
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return (TS_LF_READWRITE == (aLock & TS_LF_READWRITE));
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}
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bool IsReadLocked() const { return IsReadLock(mLock); }
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bool IsReadWriteLocked() const { return IsReadWriteLock(mLock); }
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// This is called immediately after a call of OnLockGranted() of mSink.
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// Note that mLock isn't cleared yet when this is called.
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void DidLockGranted();
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bool GetScreenExtInternal(RECT& aScreenExt);
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// If aDispatchCompositionChangeEvent is true, this method will dispatch
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// compositionchange event if this is called during IME composing.
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// aDispatchCompositionChangeEvent should be true only when this is called
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// from SetSelection. Because otherwise, the compositionchange event should
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// not be sent from here.
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HRESULT SetSelectionInternal(const TS_SELECTION_ACP*,
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bool aDispatchCompositionChangeEvent = false);
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bool InsertTextAtSelectionInternal(const nsAString& aInsertStr,
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TS_TEXTCHANGE* aTextChange);
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void CommitCompositionInternal(bool);
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HRESULT GetDisplayAttribute(ITfProperty* aProperty,
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ITfRange* aRange,
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TF_DISPLAYATTRIBUTE* aResult);
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HRESULT RestartCompositionIfNecessary(ITfRange* pRangeNew = nullptr);
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HRESULT RestartComposition(ITfCompositionView* aCompositionView,
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ITfRange* aNewRange);
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// Following methods record composing action(s) to mPendingActions.
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// They will be flushed FlushPendingActions().
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HRESULT RecordCompositionStartAction(ITfCompositionView* aCompositionView,
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ITfRange* aRange,
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bool aPreserveSelection);
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HRESULT RecordCompositionStartAction(ITfCompositionView* aComposition,
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LONG aStart,
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LONG aLength,
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bool aPreserveSelection);
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HRESULT RecordCompositionUpdateAction();
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HRESULT RecordCompositionEndAction();
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// DispatchEvent() dispatches the event and if it may not be handled
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// synchronously, this makes the instance not notify TSF of pending
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// notifications until next notification from content.
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void DispatchEvent(WidgetGUIEvent& aEvent);
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void OnLayoutInformationAvaliable();
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// FlushPendingActions() performs pending actions recorded in mPendingActions
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// and clear it.
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void FlushPendingActions();
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// MaybeFlushPendingNotifications() performs pending notifications to TSF.
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void MaybeFlushPendingNotifications();
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nsresult OnTextChangeInternal(const IMENotification& aIMENotification);
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nsresult OnSelectionChangeInternal(const IMENotification& aIMENotification);
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nsresult OnMouseButtonEventInternal(const IMENotification& aIMENotification);
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nsresult OnLayoutChangeInternal();
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nsresult OnUpdateCompositionInternal();
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// mPendingSelectionChangeData stores selection change data until notifying
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// TSF of selection change. If two or more selection changes occur, this
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// stores the latest selection change data because only it is necessary.
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SelectionChangeData mPendingSelectionChangeData;
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// mPendingTextChangeData stores one or more text change data until notifying
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// TSF of text change. If two or more text changes occur, this merges
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// every text change data.
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TextChangeData mPendingTextChangeData;
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void NotifyTSFOfTextChange();
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void NotifyTSFOfSelectionChange();
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bool NotifyTSFOfLayoutChange();
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void NotifyTSFOfLayoutChangeAgain();
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HRESULT HandleRequestAttrs(DWORD aFlags,
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ULONG aFilterCount,
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const TS_ATTRID* aFilterAttrs);
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void SetInputScope(const nsString& aHTMLInputType,
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const nsString& aHTMLInputInputmode);
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// Creates native caret over our caret. This method only works on desktop
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// application. Otherwise, this does nothing.
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void CreateNativeCaret();
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// Destroys native caret if there is.
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void MaybeDestroyNativeCaret();
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// Holds the pointer to our current win32 widget
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RefPtr<nsWindowBase> mWidget;
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// mDispatcher is a helper class to dispatch composition events.
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RefPtr<TextEventDispatcher> mDispatcher;
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// Document manager for the currently focused editor
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RefPtr<ITfDocumentMgr> mDocumentMgr;
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// Edit cookie associated with the current editing context
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DWORD mEditCookie;
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// Editing context at the bottom of mDocumentMgr's context stack
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RefPtr<ITfContext> mContext;
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// Currently installed notification sink
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RefPtr<ITextStoreACPSink> mSink;
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// TS_AS_* mask of what events to notify
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DWORD mSinkMask;
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// 0 if not locked, otherwise TS_LF_* indicating the current lock
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DWORD mLock;
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// 0 if no lock is queued, otherwise TS_LF_* indicating the queue lock
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DWORD mLockQueued;
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uint32_t mHandlingKeyMessage;
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void OnStartToHandleKeyMessage() { ++mHandlingKeyMessage; }
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void OnEndHandlingKeyMessage()
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{
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MOZ_ASSERT(mHandlingKeyMessage);
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if (--mHandlingKeyMessage) {
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return;
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}
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// If TSFTextStore instance is destroyed during handling key message(s),
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// release all TSF objects when all nested key messages have been handled.
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if (mDestroyed) {
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ReleaseTSFObjects();
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}
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}
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class Composition final
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{
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public:
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// nullptr if no composition is active, otherwise the current composition
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RefPtr<ITfCompositionView> mView;
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// Current copy of the active composition string. Only mString is
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// changed during a InsertTextAtSelection call if we have a composition.
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// mString acts as a buffer until OnUpdateComposition is called
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// and mString is flushed to editor through eCompositionChange.
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// This way all changes are updated in batches to avoid
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// inconsistencies/artifacts.
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nsString mString;
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// The start of the current active composition, in ACP offsets
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LONG mStart;
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bool IsComposing() const
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{
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return (mView != nullptr);
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}
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LONG EndOffset() const
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{
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return mStart + static_cast<LONG>(mString.Length());
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}
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// Start() and End() updates the members for emulating the latest state.
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// Unless flush the pending actions, this data never matches the actual
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// content.
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void Start(ITfCompositionView* aCompositionView,
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LONG aCompositionStartOffset,
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const nsAString& aCompositionString);
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void End();
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};
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// While the document is locked, we cannot dispatch any events which cause
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// DOM events since the DOM events' handlers may modify the locked document.
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// However, even while the document is locked, TSF may queries us.
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// For that, TSFTextStore modifies mComposition even while the document is
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// locked. With mComposition, query methods can returns the text content
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// information.
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Composition mComposition;
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/**
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* IsComposingInContent() returns true if there is a composition in the
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* focused editor and it's caused by native IME (either TIP of TSF or IME of
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* IMM). I.e., returns true between eCompositionStart and
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* eCompositionCommit(AsIs).
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*/
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bool IsComposingInContent() const;
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class Selection
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{
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public:
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Selection() : mDirty(true) {}
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bool IsDirty() const { return mDirty; };
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void MarkDirty() { mDirty = true; }
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TS_SELECTION_ACP& ACP()
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{
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MOZ_ASSERT(!mDirty);
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return mACP;
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}
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void SetSelection(const TS_SELECTION_ACP& aSelection)
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{
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mDirty = false;
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mACP = aSelection;
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// Selection end must be active in our editor.
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if (mACP.style.ase != TS_AE_START) {
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mACP.style.ase = TS_AE_END;
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}
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// We're not support interim char selection for now.
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// XXX Probably, this is necessary for supporting South Asian languages.
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mACP.style.fInterimChar = FALSE;
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}
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bool SetSelection(uint32_t aStart,
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uint32_t aLength,
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bool aReversed,
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WritingMode aWritingMode)
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{
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bool changed = mDirty ||
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mACP.acpStart != static_cast<LONG>(aStart) ||
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mACP.acpEnd != static_cast<LONG>(aStart + aLength);
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mDirty = false;
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mACP.acpStart = static_cast<LONG>(aStart);
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mACP.acpEnd = static_cast<LONG>(aStart + aLength);
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mACP.style.ase = aReversed ? TS_AE_START : TS_AE_END;
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mACP.style.fInterimChar = FALSE;
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mWritingMode = aWritingMode;
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return changed;
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}
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bool IsCollapsed() const
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{
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MOZ_ASSERT(!mDirty);
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return (mACP.acpStart == mACP.acpEnd);
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}
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void CollapseAt(uint32_t aOffset)
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{
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// XXX This does not update the selection's mWritingMode.
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// If it is ever used to "collapse" to an entirely new location,
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// we may need to fix that.
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mDirty = false;
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mACP.acpStart = mACP.acpEnd = static_cast<LONG>(aOffset);
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mACP.style.ase = TS_AE_END;
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mACP.style.fInterimChar = FALSE;
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}
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|
|
|
LONG MinOffset() const
|
|
{
|
|
MOZ_ASSERT(!mDirty);
|
|
LONG min = std::min(mACP.acpStart, mACP.acpEnd);
|
|
MOZ_ASSERT(min >= 0);
|
|
return min;
|
|
}
|
|
|
|
LONG MaxOffset() const
|
|
{
|
|
MOZ_ASSERT(!mDirty);
|
|
LONG max = std::max(mACP.acpStart, mACP.acpEnd);
|
|
MOZ_ASSERT(max >= 0);
|
|
return max;
|
|
}
|
|
|
|
LONG StartOffset() const
|
|
{
|
|
MOZ_ASSERT(!mDirty);
|
|
MOZ_ASSERT(mACP.acpStart >= 0);
|
|
return mACP.acpStart;
|
|
}
|
|
|
|
LONG EndOffset() const
|
|
{
|
|
MOZ_ASSERT(!mDirty);
|
|
MOZ_ASSERT(mACP.acpEnd >= 0);
|
|
return mACP.acpEnd;
|
|
}
|
|
|
|
LONG Length() const
|
|
{
|
|
MOZ_ASSERT(!mDirty);
|
|
MOZ_ASSERT(mACP.acpEnd >= mACP.acpStart);
|
|
return std::abs(mACP.acpEnd - mACP.acpStart);
|
|
}
|
|
|
|
bool IsReversed() const
|
|
{
|
|
MOZ_ASSERT(!mDirty);
|
|
return (mACP.style.ase == TS_AE_START);
|
|
}
|
|
|
|
TsActiveSelEnd ActiveSelEnd() const
|
|
{
|
|
MOZ_ASSERT(!mDirty);
|
|
return mACP.style.ase;
|
|
}
|
|
|
|
bool IsInterimChar() const
|
|
{
|
|
MOZ_ASSERT(!mDirty);
|
|
return (mACP.style.fInterimChar != FALSE);
|
|
}
|
|
|
|
WritingMode GetWritingMode() const
|
|
{
|
|
MOZ_ASSERT(!mDirty);
|
|
return mWritingMode;
|
|
}
|
|
|
|
bool EqualsExceptDirection(const TS_SELECTION_ACP& aACP) const
|
|
{
|
|
if (mACP.style.ase == aACP.style.ase) {
|
|
return mACP.acpStart == aACP.acpStart &&
|
|
mACP.acpEnd == aACP.acpEnd;
|
|
}
|
|
return mACP.acpStart == aACP.acpEnd &&
|
|
mACP.acpEnd == aACP.acpStart;
|
|
}
|
|
|
|
bool EqualsExceptDirection(
|
|
const SelectionChangeDataBase& aChangedSelection) const
|
|
{
|
|
MOZ_ASSERT(!mDirty);
|
|
MOZ_ASSERT(aChangedSelection.IsValid());
|
|
return aChangedSelection.Length() == static_cast<uint32_t>(Length()) &&
|
|
aChangedSelection.mOffset == static_cast<uint32_t>(StartOffset());
|
|
}
|
|
|
|
private:
|
|
TS_SELECTION_ACP mACP;
|
|
WritingMode mWritingMode;
|
|
bool mDirty;
|
|
};
|
|
// Don't access mSelection directly except at calling MarkDirty().
|
|
// Use SelectionForTSFRef() instead. This is modified immediately when
|
|
// TSF requests to set selection and not updated by selection change in
|
|
// content until mContentForTSF is cleared.
|
|
Selection mSelectionForTSF;
|
|
|
|
/**
|
|
* Get the selection expected by TSF. If mSelectionForTSF is already valid,
|
|
* this just return the reference to it. Otherwise, this initializes it
|
|
* with eQuerySelectedText. Please check if the result is valid before
|
|
* actually using it.
|
|
* Note that this is also called by ContentForTSFRef().
|
|
*/
|
|
Selection& SelectionForTSFRef();
|
|
|
|
class MOZ_STACK_CLASS AutoSetTemporarySelection final
|
|
{
|
|
public:
|
|
explicit AutoSetTemporarySelection(Selection& aSelection)
|
|
: mSelection(aSelection)
|
|
{
|
|
mDirty = mSelection.IsDirty();
|
|
if (mDirty) {
|
|
mSelection.CollapseAt(0);
|
|
}
|
|
}
|
|
|
|
~AutoSetTemporarySelection()
|
|
{
|
|
if (mDirty) {
|
|
mSelection.MarkDirty();
|
|
}
|
|
}
|
|
|
|
private:
|
|
Selection& mSelection;
|
|
bool mDirty;
|
|
};
|
|
|
|
struct PendingAction final
|
|
{
|
|
enum ActionType : uint8_t
|
|
{
|
|
COMPOSITION_START,
|
|
COMPOSITION_UPDATE,
|
|
COMPOSITION_END,
|
|
SET_SELECTION
|
|
};
|
|
ActionType mType;
|
|
// For compositionstart and selectionset
|
|
LONG mSelectionStart;
|
|
LONG mSelectionLength;
|
|
// For compositionstart, compositionupdate and compositionend
|
|
nsString mData;
|
|
// For compositionupdate
|
|
RefPtr<TextRangeArray> mRanges;
|
|
// For selectionset
|
|
bool mSelectionReversed;
|
|
// For compositionupdate
|
|
bool mIncomplete;
|
|
// For compositionstart
|
|
bool mAdjustSelection;
|
|
};
|
|
// Items of mPendingActions are appended when TSF tells us to need to dispatch
|
|
// DOM composition events. However, we cannot dispatch while the document is
|
|
// locked because it can cause modifying the locked document. So, the pending
|
|
// actions should be performed when document lock is unlocked.
|
|
nsTArray<PendingAction> mPendingActions;
|
|
|
|
PendingAction* LastOrNewPendingCompositionUpdate()
|
|
{
|
|
if (!mPendingActions.IsEmpty()) {
|
|
PendingAction& lastAction = mPendingActions.LastElement();
|
|
if (lastAction.mType == PendingAction::COMPOSITION_UPDATE) {
|
|
return &lastAction;
|
|
}
|
|
}
|
|
PendingAction* newAction = mPendingActions.AppendElement();
|
|
newAction->mType = PendingAction::COMPOSITION_UPDATE;
|
|
newAction->mRanges = new TextRangeArray();
|
|
newAction->mIncomplete = true;
|
|
return newAction;
|
|
}
|
|
|
|
/**
|
|
* WasTextInsertedWithoutCompositionAt() checks if text was inserted without
|
|
* composition immediately before (e.g., see InsertTextAtSelectionInternal()).
|
|
*
|
|
* @param aStart The inserted offset you expected.
|
|
* @param aLength The inserted text length you expected.
|
|
* @return true if the last pending actions are
|
|
* COMPOSITION_START and COMPOSITION_END and
|
|
* aStart and aLength match their information.
|
|
*/
|
|
bool WasTextInsertedWithoutCompositionAt(LONG aStart, LONG aLength) const
|
|
{
|
|
if (mPendingActions.Length() < 2) {
|
|
return false;
|
|
}
|
|
const PendingAction& pendingLastAction = mPendingActions.LastElement();
|
|
if (pendingLastAction.mType != PendingAction::COMPOSITION_END ||
|
|
pendingLastAction.mData.Length() != aLength) {
|
|
return false;
|
|
}
|
|
const PendingAction& pendingPreLastAction =
|
|
mPendingActions[mPendingActions.Length() - 2];
|
|
return pendingPreLastAction.mType == PendingAction::COMPOSITION_START &&
|
|
pendingPreLastAction.mSelectionStart == aStart;
|
|
}
|
|
|
|
bool IsPendingCompositionUpdateIncomplete() const
|
|
{
|
|
if (mPendingActions.IsEmpty()) {
|
|
return false;
|
|
}
|
|
const PendingAction& lastAction = mPendingActions.LastElement();
|
|
return lastAction.mType == PendingAction::COMPOSITION_UPDATE &&
|
|
lastAction.mIncomplete;
|
|
}
|
|
|
|
void CompleteLastActionIfStillIncomplete()
|
|
{
|
|
if (!IsPendingCompositionUpdateIncomplete()) {
|
|
return;
|
|
}
|
|
RecordCompositionUpdateAction();
|
|
}
|
|
|
|
// When On*Composition() is called without document lock, we need to flush
|
|
// the recorded actions at quitting the method.
|
|
// AutoPendingActionAndContentFlusher class is usedful for it.
|
|
class MOZ_STACK_CLASS AutoPendingActionAndContentFlusher final
|
|
{
|
|
public:
|
|
explicit AutoPendingActionAndContentFlusher(TSFTextStore* aTextStore)
|
|
: mTextStore(aTextStore)
|
|
{
|
|
MOZ_ASSERT(!mTextStore->mIsRecordingActionsWithoutLock);
|
|
if (!mTextStore->IsReadWriteLocked()) {
|
|
mTextStore->mIsRecordingActionsWithoutLock = true;
|
|
}
|
|
}
|
|
|
|
~AutoPendingActionAndContentFlusher()
|
|
{
|
|
if (!mTextStore->mIsRecordingActionsWithoutLock) {
|
|
return;
|
|
}
|
|
mTextStore->FlushPendingActions();
|
|
mTextStore->mIsRecordingActionsWithoutLock = false;
|
|
}
|
|
|
|
private:
|
|
AutoPendingActionAndContentFlusher() {}
|
|
|
|
RefPtr<TSFTextStore> mTextStore;
|
|
};
|
|
|
|
class Content final
|
|
{
|
|
public:
|
|
Content(TSFTextStore::Composition& aComposition,
|
|
TSFTextStore::Selection& aSelection) :
|
|
mComposition(aComposition), mSelection(aSelection)
|
|
{
|
|
Clear();
|
|
}
|
|
|
|
void Clear()
|
|
{
|
|
mText.Truncate();
|
|
mLastCompositionString.Truncate();
|
|
mInitialized = false;
|
|
}
|
|
|
|
bool IsInitialized() const { return mInitialized; }
|
|
|
|
void Init(const nsAString& aText)
|
|
{
|
|
mText = aText;
|
|
if (mComposition.IsComposing()) {
|
|
mLastCompositionString = mComposition.mString;
|
|
} else {
|
|
mLastCompositionString.Truncate();
|
|
}
|
|
mMinTextModifiedOffset = NOT_MODIFIED;
|
|
mInitialized = true;
|
|
}
|
|
|
|
void OnLayoutChanged()
|
|
{
|
|
mMinTextModifiedOffset = NOT_MODIFIED;
|
|
}
|
|
|
|
const nsDependentSubstring GetSelectedText() const;
|
|
const nsDependentSubstring GetSubstring(uint32_t aStart,
|
|
uint32_t aLength) const;
|
|
void ReplaceSelectedTextWith(const nsAString& aString);
|
|
void ReplaceTextWith(LONG aStart, LONG aLength, const nsAString& aString);
|
|
|
|
void StartComposition(ITfCompositionView* aCompositionView,
|
|
const PendingAction& aCompStart,
|
|
bool aPreserveSelection);
|
|
/**
|
|
* RestoreCommittedComposition() restores the committed string as
|
|
* composing string. If InsertTextAtSelection() or something is called
|
|
* before a call of OnStartComposition(), there is a pending
|
|
* compositionstart and a pending compositionend. In this case, we
|
|
* need to cancel the pending compositionend and continue the composition.
|
|
*
|
|
* @param aCompositionView The composition view.
|
|
* @param aPendingCompositionStart The pending compositionstart which
|
|
* started the committed composition.
|
|
* @param aCanceledCompositionEnd The pending compositionend which is
|
|
* canceled for restarting the composition.
|
|
*/
|
|
void RestoreCommittedComposition(
|
|
ITfCompositionView* aCompositionView,
|
|
const PendingAction& aPendingCompositionStart,
|
|
const PendingAction& aCanceledCompositionEnd);
|
|
void EndComposition(const PendingAction& aCompEnd);
|
|
|
|
const nsString& Text() const
|
|
{
|
|
MOZ_ASSERT(mInitialized);
|
|
return mText;
|
|
}
|
|
const nsString& LastCompositionString() const
|
|
{
|
|
MOZ_ASSERT(mInitialized);
|
|
return mLastCompositionString;
|
|
}
|
|
uint32_t MinTextModifiedOffset() const
|
|
{
|
|
MOZ_ASSERT(mInitialized);
|
|
return mMinTextModifiedOffset;
|
|
}
|
|
|
|
// Returns true if layout of the character at the aOffset has not been
|
|
// calculated.
|
|
bool IsLayoutChangedAt(uint32_t aOffset) const
|
|
{
|
|
return IsLayoutChanged() && (mMinTextModifiedOffset <= aOffset);
|
|
}
|
|
// Returns true if layout of the content has been changed, i.e., the new
|
|
// layout has not been calculated.
|
|
bool IsLayoutChanged() const
|
|
{
|
|
return mInitialized && (mMinTextModifiedOffset != NOT_MODIFIED);
|
|
}
|
|
// Returns minimum offset of modified text range.
|
|
uint32_t MinOffsetOfLayoutChanged() const
|
|
{
|
|
return mInitialized ? mMinTextModifiedOffset : NOT_MODIFIED;
|
|
}
|
|
|
|
TSFTextStore::Composition& Composition() { return mComposition; }
|
|
TSFTextStore::Selection& Selection() { return mSelection; }
|
|
|
|
private:
|
|
nsString mText;
|
|
// mLastCompositionString stores the composition string when the document
|
|
// is locked. This is necessary to compute mMinTextModifiedOffset.
|
|
nsString mLastCompositionString;
|
|
TSFTextStore::Composition& mComposition;
|
|
TSFTextStore::Selection& mSelection;
|
|
|
|
// The minimum offset of modified part of the text.
|
|
enum : uint32_t
|
|
{
|
|
NOT_MODIFIED = UINT32_MAX
|
|
};
|
|
uint32_t mMinTextModifiedOffset;
|
|
|
|
bool mInitialized;
|
|
};
|
|
// mContentForTSF is cache of content. The information is expected by TSF
|
|
// and TIP. Therefore, this is useful for answering the query from TSF or
|
|
// TIP.
|
|
// This is initialized by ContentForTSFRef() automatically (therefore, don't
|
|
// access this member directly except at calling Clear(), IsInitialized(),
|
|
// IsLayoutChangeAfter() or IsLayoutChanged()).
|
|
// This is cleared when:
|
|
// - When there is no composition, the document is unlocked.
|
|
// - When there is a composition, all dispatched events are handled by
|
|
// the focused editor which may be in a remote process.
|
|
// So, if two compositions are created very quickly, this cache may not be
|
|
// cleared between eCompositionCommit(AsIs) and eCompositionStart.
|
|
Content mContentForTSF;
|
|
|
|
Content& ContentForTSFRef();
|
|
|
|
// CanAccessActualContentDirectly() returns true when TSF/TIP can access
|
|
// actual content directly. In other words, mContentForTSF and/or
|
|
// mSelectionForTSF doesn't cache content or they matches with actual
|
|
// contents due to no pending text/selection change notifications.
|
|
bool CanAccessActualContentDirectly() const;
|
|
|
|
// While mContentForTSF is valid, this returns the text stored by it.
|
|
// Otherwise, return the current text content retrieved by eQueryTextContent.
|
|
bool GetCurrentText(nsAString& aTextContent);
|
|
|
|
class MouseTracker final
|
|
{
|
|
public:
|
|
static const DWORD kInvalidCookie = static_cast<DWORD>(-1);
|
|
|
|
MouseTracker();
|
|
|
|
HRESULT Init(TSFTextStore* aTextStore);
|
|
HRESULT AdviseSink(TSFTextStore* aTextStore,
|
|
ITfRangeACP* aTextRange, ITfMouseSink* aMouseSink);
|
|
void UnadviseSink();
|
|
|
|
bool IsUsing() const { return mSink != nullptr; }
|
|
bool InRange(uint32_t aOffset) const
|
|
{
|
|
if (NS_WARN_IF(mStart < 0) ||
|
|
NS_WARN_IF(mLength <= 0)) {
|
|
return false;
|
|
}
|
|
return aOffset >= static_cast<uint32_t>(mStart) &&
|
|
aOffset < static_cast<uint32_t>(mStart + mLength);
|
|
}
|
|
DWORD Cookie() const { return mCookie; }
|
|
bool OnMouseButtonEvent(ULONG aEdge, ULONG aQuadrant, DWORD aButtonStatus);
|
|
LONG RangeStart() const { return mStart; }
|
|
|
|
private:
|
|
RefPtr<ITfMouseSink> mSink;
|
|
LONG mStart;
|
|
LONG mLength;
|
|
DWORD mCookie;
|
|
};
|
|
// mMouseTrackers is an array to store each information of installed
|
|
// ITfMouseSink instance.
|
|
nsTArray<MouseTracker> mMouseTrackers;
|
|
|
|
// The input scopes for this context, defaults to IS_DEFAULT.
|
|
nsTArray<InputScope> mInputScopes;
|
|
|
|
// Support retrieving attributes.
|
|
// TODO: We should support RightToLeft, perhaps.
|
|
enum
|
|
{
|
|
// Used for result of GetRequestedAttrIndex()
|
|
eNotSupported = -1,
|
|
|
|
// Supported attributes
|
|
eInputScope = 0,
|
|
eTextVerticalWriting,
|
|
eTextOrientation,
|
|
|
|
// Count of the supported attributes
|
|
NUM_OF_SUPPORTED_ATTRS
|
|
};
|
|
bool mRequestedAttrs[NUM_OF_SUPPORTED_ATTRS];
|
|
|
|
int32_t GetRequestedAttrIndex(const TS_ATTRID& aAttrID);
|
|
TS_ATTRID GetAttrID(int32_t aIndex);
|
|
|
|
bool mRequestedAttrValues;
|
|
|
|
// If edit actions are being recorded without document lock, this is true.
|
|
// Otherwise, false.
|
|
bool mIsRecordingActionsWithoutLock;
|
|
// If GetTextExt() or GetACPFromPoint() is called and the layout hasn't been
|
|
// calculated yet, these methods return TS_E_NOLAYOUT. At that time,
|
|
// mHasReturnedNoLayoutError is set to true.
|
|
bool mHasReturnedNoLayoutError;
|
|
// Before calling ITextStoreACPSink::OnLayoutChange() and
|
|
// ITfContextOwnerServices::OnLayoutChange(), mWaitingQueryLayout is set to
|
|
// true. This is set to false when GetTextExt() or GetACPFromPoint() is
|
|
// called.
|
|
bool mWaitingQueryLayout;
|
|
// During the documet is locked, we shouldn't destroy the instance.
|
|
// If this is true, the instance will be destroyed after unlocked.
|
|
bool mPendingDestroy;
|
|
// If this is false, MaybeFlushPendingNotifications() will clear the
|
|
// mContentForTSF.
|
|
bool mDeferClearingContentForTSF;
|
|
// While there is native caret, this is true. Otherwise, false.
|
|
bool mNativeCaretIsCreated;
|
|
// While the instance is dispatching events, the event may not be handled
|
|
// synchronously in e10s mode. So, in such case, in strictly speaking,
|
|
// we shouldn't query layout information. However, TS_E_NOLAYOUT bugs of
|
|
// ITextStoreAPC::GetTextExt() blocks us to behave ideally.
|
|
// For preventing it to be called, we should put off notifying TSF of
|
|
// anything until layout information becomes available.
|
|
bool mDeferNotifyingTSF;
|
|
// While the document is locked, committing composition always fails since
|
|
// TSF needs another document lock for modifying the composition, selection
|
|
// and etc. So, committing composition should be performed after the
|
|
// document is unlocked.
|
|
bool mDeferCommittingComposition;
|
|
bool mDeferCancellingComposition;
|
|
// Immediately after a call of Destroy(), mDestroyed becomes true. If this
|
|
// is true, the instance shouldn't grant any requests from the TIP anymore.
|
|
bool mDestroyed;
|
|
// While the instance is being destroyed, this is set to true for avoiding
|
|
// recursive Destroy() calls.
|
|
bool mBeingDestroyed;
|
|
|
|
|
|
// TSF thread manager object for the current application
|
|
static StaticRefPtr<ITfThreadMgr> sThreadMgr;
|
|
// sMessagePump is QI'ed from sThreadMgr
|
|
static StaticRefPtr<ITfMessagePump> sMessagePump;
|
|
// sKeystrokeMgr is QI'ed from sThreadMgr
|
|
static StaticRefPtr<ITfKeystrokeMgr> sKeystrokeMgr;
|
|
// TSF display attribute manager
|
|
static StaticRefPtr<ITfDisplayAttributeMgr> sDisplayAttrMgr;
|
|
// TSF category manager
|
|
static StaticRefPtr<ITfCategoryMgr> sCategoryMgr;
|
|
|
|
// Current text store which is managing a keyboard enabled editor (i.e.,
|
|
// editable editor). Currently only ONE TSFTextStore instance is ever used,
|
|
// although Create is called when an editor is focused and Destroy called
|
|
// when the focused editor is blurred.
|
|
static StaticRefPtr<TSFTextStore> sEnabledTextStore;
|
|
|
|
// For IME (keyboard) disabled state:
|
|
static StaticRefPtr<ITfDocumentMgr> sDisabledDocumentMgr;
|
|
static StaticRefPtr<ITfContext> sDisabledContext;
|
|
|
|
static StaticRefPtr<ITfInputProcessorProfiles> sInputProcessorProfiles;
|
|
|
|
// TSF client ID for the current application
|
|
static DWORD sClientId;
|
|
|
|
// Enables/Disables hack for specific TIP.
|
|
static bool sCreateNativeCaretForLegacyATOK;
|
|
static bool sDoNotReturnNoLayoutErrorToATOKOfCompositionString;
|
|
static bool sDoNotReturnNoLayoutErrorToMSSimplifiedTIP;
|
|
static bool sDoNotReturnNoLayoutErrorToMSTraditionalTIP;
|
|
static bool sDoNotReturnNoLayoutErrorToFreeChangJie;
|
|
static bool sDoNotReturnNoLayoutErrorToEasyChangjei;
|
|
static bool sDoNotReturnNoLayoutErrorToMSJapaneseIMEAtFirstChar;
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static bool sDoNotReturnNoLayoutErrorToMSJapaneseIMEAtCaret;
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static bool sHackQueryInsertForMSSimplifiedTIP;
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static bool sHackQueryInsertForMSTraditionalTIP;
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};
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} // namespace widget
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} // namespace mozilla
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#endif // #ifndef TSFTextStore_h_
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