| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #define INITGUID // required for GUID_PROP_INPUTSCOPE |
| #include "ui/base/ime/win/tsf_text_store.h" |
| |
| #include <InputScope.h> |
| #include <OleCtl.h> |
| #include <wrl/client.h> |
| |
| #include <algorithm> |
| |
| #include "base/win/scoped_variant.h" |
| #include "ui/base/ime/text_input_client.h" |
| #include "ui/base/ime/win/tsf_input_scope.h" |
| #include "ui/gfx/geometry/rect.h" |
| |
| namespace ui { |
| namespace { |
| |
| // We support only one view. |
| const TsViewCookie kViewCookie = 1; |
| |
| } // namespace |
| |
| TSFTextStore::TSFTextStore() { |
| if (FAILED(::CoCreateInstance(CLSID_TF_CategoryMgr, nullptr, CLSCTX_ALL, |
| IID_PPV_ARGS(&category_manager_)))) { |
| LOG(FATAL) << "Failed to initialize CategoryMgr."; |
| return; |
| } |
| if (FAILED(::CoCreateInstance(CLSID_TF_DisplayAttributeMgr, nullptr, |
| CLSCTX_ALL, |
| IID_PPV_ARGS(&display_attribute_manager_)))) { |
| LOG(FATAL) << "Failed to initialize DisplayAttributeMgr."; |
| return; |
| } |
| } |
| |
| TSFTextStore::~TSFTextStore() {} |
| |
| ULONG STDMETHODCALLTYPE TSFTextStore::AddRef() { |
| return InterlockedIncrement(&ref_count_); |
| } |
| |
| ULONG STDMETHODCALLTYPE TSFTextStore::Release() { |
| const LONG count = InterlockedDecrement(&ref_count_); |
| if (!count) { |
| delete this; |
| return 0; |
| } |
| return static_cast<ULONG>(count); |
| } |
| |
| STDMETHODIMP TSFTextStore::QueryInterface(REFIID iid, void** result) { |
| if (iid == IID_IUnknown || iid == IID_ITextStoreACP) { |
| *result = static_cast<ITextStoreACP*>(this); |
| } else if (iid == IID_ITfContextOwnerCompositionSink) { |
| *result = static_cast<ITfContextOwnerCompositionSink*>(this); |
| } else if (iid == IID_ITfTextEditSink) { |
| *result = static_cast<ITfTextEditSink*>(this); |
| } else { |
| *result = nullptr; |
| return E_NOINTERFACE; |
| } |
| AddRef(); |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::AdviseSink(REFIID iid, |
| IUnknown* unknown, |
| DWORD mask) { |
| if (!IsEqualGUID(iid, IID_ITextStoreACPSink)) |
| return E_INVALIDARG; |
| if (text_store_acp_sink_) { |
| if (text_store_acp_sink_.Get() == unknown) { |
| text_store_acp_sink_mask_ = mask; |
| return S_OK; |
| } else { |
| return CONNECT_E_ADVISELIMIT; |
| } |
| } |
| if (FAILED(unknown->QueryInterface(IID_PPV_ARGS(&text_store_acp_sink_)))) |
| return E_UNEXPECTED; |
| text_store_acp_sink_mask_ = mask; |
| |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::FindNextAttrTransition( |
| LONG acp_start, |
| LONG acp_halt, |
| ULONG num_filter_attributes, |
| const TS_ATTRID* filter_attributes, |
| DWORD flags, |
| LONG* acp_next, |
| BOOL* found, |
| LONG* found_offset) { |
| if (!acp_next || !found || !found_offset) |
| return E_INVALIDARG; |
| // We don't support any attributes. |
| // So we always return "not found". |
| *acp_next = 0; |
| *found = FALSE; |
| *found_offset = 0; |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::GetACPFromPoint(TsViewCookie view_cookie, |
| const POINT* point, |
| DWORD flags, |
| LONG* acp) { |
| NOTIMPLEMENTED(); |
| if (view_cookie != kViewCookie) |
| return E_INVALIDARG; |
| return E_NOTIMPL; |
| } |
| |
| STDMETHODIMP TSFTextStore::GetActiveView(TsViewCookie* view_cookie) { |
| if (!view_cookie) |
| return E_INVALIDARG; |
| // We support only one view. |
| *view_cookie = kViewCookie; |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::GetEmbedded(LONG acp_pos, |
| REFGUID service, |
| REFIID iid, |
| IUnknown** unknown) { |
| // We don't support any embedded objects. |
| NOTIMPLEMENTED(); |
| if (!unknown) |
| return E_INVALIDARG; |
| *unknown = nullptr; |
| return E_NOTIMPL; |
| } |
| |
| STDMETHODIMP TSFTextStore::GetEndACP(LONG* acp) { |
| if (!acp) |
| return E_INVALIDARG; |
| if (!HasReadLock()) |
| return TS_E_NOLOCK; |
| *acp = string_buffer_.size(); |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::GetFormattedText(LONG acp_start, |
| LONG acp_end, |
| IDataObject** data_object) { |
| NOTIMPLEMENTED(); |
| return E_NOTIMPL; |
| } |
| |
| STDMETHODIMP TSFTextStore::GetScreenExt(TsViewCookie view_cookie, RECT* rect) { |
| if (view_cookie != kViewCookie) |
| return E_INVALIDARG; |
| if (!rect) |
| return E_INVALIDARG; |
| |
| // {0, 0, 0, 0} means that the document rect is not currently displayed. |
| SetRect(rect, 0, 0, 0, 0); |
| |
| if (!IsWindow(window_handle_)) |
| return E_FAIL; |
| |
| // Currently ui::TextInputClient does not expose the document rect. So use |
| // the Win32 client rectangle instead. |
| // TODO(yukawa): Upgrade TextInputClient so that the client can retrieve the |
| // document rectangle. |
| RECT client_rect = {}; |
| if (!GetClientRect(window_handle_, &client_rect)) |
| return E_FAIL; |
| POINT left_top = {client_rect.left, client_rect.top}; |
| POINT right_bottom = {client_rect.right, client_rect.bottom}; |
| if (!ClientToScreen(window_handle_, &left_top)) |
| return E_FAIL; |
| if (!ClientToScreen(window_handle_, &right_bottom)) |
| return E_FAIL; |
| |
| rect->left = left_top.x; |
| rect->top = left_top.y; |
| rect->right = right_bottom.x; |
| rect->bottom = right_bottom.y; |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::GetSelection(ULONG selection_index, |
| ULONG selection_buffer_size, |
| TS_SELECTION_ACP* selection_buffer, |
| ULONG* fetched_count) { |
| if (!selection_buffer) |
| return E_INVALIDARG; |
| if (!fetched_count) |
| return E_INVALIDARG; |
| if (!HasReadLock()) |
| return TS_E_NOLOCK; |
| *fetched_count = 0; |
| if ((selection_buffer_size > 0) && |
| ((selection_index == 0) || (selection_index == TS_DEFAULT_SELECTION))) { |
| selection_buffer[0].acpStart = selection_.start(); |
| selection_buffer[0].acpEnd = selection_.end(); |
| selection_buffer[0].style.ase = TS_AE_END; |
| selection_buffer[0].style.fInterimChar = FALSE; |
| *fetched_count = 1; |
| } |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::GetStatus(TS_STATUS* status) { |
| if (!status) |
| return E_INVALIDARG; |
| |
| status->dwDynamicFlags = 0; |
| // We use transitory contexts and we don't support hidden text. |
| // TODO(dtapuska): Remove TS_SS_TRANSITORY it was added to fix |
| // https://crbug.com/148355 |
| status->dwStaticFlags = TS_SS_TRANSITORY | TS_SS_NOHIDDENTEXT; |
| |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::GetText(LONG acp_start, |
| LONG acp_end, |
| wchar_t* text_buffer, |
| ULONG text_buffer_size, |
| ULONG* text_buffer_copied, |
| TS_RUNINFO* run_info_buffer, |
| ULONG run_info_buffer_size, |
| ULONG* run_info_buffer_copied, |
| LONG* next_acp) { |
| if (!text_buffer_copied || !run_info_buffer_copied) |
| return E_INVALIDARG; |
| if (!text_buffer && text_buffer_size != 0) |
| return E_INVALIDARG; |
| if (!run_info_buffer && run_info_buffer_size != 0) |
| return E_INVALIDARG; |
| if (!next_acp) |
| return E_INVALIDARG; |
| if (!HasReadLock()) |
| return TF_E_NOLOCK; |
| const LONG string_buffer_size = string_buffer_.size(); |
| if (acp_end == -1) |
| acp_end = string_buffer_size; |
| if (!((0 <= acp_start) && (acp_start <= acp_end) && |
| (acp_end <= string_buffer_size))) { |
| return TF_E_INVALIDPOS; |
| } |
| acp_end = std::min(acp_end, acp_start + static_cast<LONG>(text_buffer_size)); |
| *text_buffer_copied = acp_end - acp_start; |
| |
| const base::string16& result = |
| string_buffer_.substr(acp_start, *text_buffer_copied); |
| for (size_t i = 0; i < result.size(); ++i) { |
| text_buffer[i] = result[i]; |
| } |
| |
| if (run_info_buffer_size) { |
| run_info_buffer[0].uCount = *text_buffer_copied; |
| run_info_buffer[0].type = TS_RT_PLAIN; |
| *run_info_buffer_copied = 1; |
| } |
| |
| *next_acp = acp_end; |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::GetTextExt(TsViewCookie view_cookie, |
| LONG acp_start, |
| LONG acp_end, |
| RECT* rect, |
| BOOL* clipped) { |
| if (!rect || !clipped) |
| return E_INVALIDARG; |
| if (!text_input_client_) |
| return E_UNEXPECTED; |
| if (view_cookie != kViewCookie) |
| return E_INVALIDARG; |
| if (!HasReadLock()) |
| return TS_E_NOLOCK; |
| if (!((static_cast<LONG>(committed_size_) <= acp_start) && |
| (acp_start <= acp_end) && |
| (acp_end <= static_cast<LONG>(string_buffer_.size())))) { |
| return TS_E_INVALIDPOS; |
| } |
| |
| // According to a behavior of notepad.exe and wordpad.exe, top left corner of |
| // rect indicates a first character's one, and bottom right corner of rect |
| // indicates a last character's one. |
| // We use RECT instead of gfx::Rect since left position may be bigger than |
| // right position when composition has multiple lines. |
| RECT result; |
| gfx::Rect tmp_rect; |
| const uint32_t start_pos = acp_start - committed_size_; |
| const uint32_t end_pos = acp_end - committed_size_; |
| |
| if (start_pos == end_pos) { |
| // According to MSDN document, if |acp_start| and |acp_end| are equal it is |
| // OK to just return E_INVALIDARG. |
| // http://msdn.microsoft.com/en-us/library/ms538435 |
| // But when using Pinin IME of Windows 8, this method is called with the |
| // equal values of |acp_start| and |acp_end|. So we handle this condition. |
| if (start_pos == 0) { |
| if (text_input_client_->GetCompositionCharacterBounds(0, &tmp_rect)) { |
| tmp_rect.set_width(0); |
| result = tmp_rect.ToRECT(); |
| } else if (string_buffer_.size() == committed_size_) { |
| result = text_input_client_->GetCaretBounds().ToRECT(); |
| } else { |
| return TS_E_NOLAYOUT; |
| } |
| } else if (text_input_client_->GetCompositionCharacterBounds(start_pos - 1, |
| &tmp_rect)) { |
| result.left = tmp_rect.right(); |
| result.right = tmp_rect.right(); |
| result.top = tmp_rect.y(); |
| result.bottom = tmp_rect.bottom(); |
| } else { |
| return TS_E_NOLAYOUT; |
| } |
| } else { |
| if (text_input_client_->GetCompositionCharacterBounds(start_pos, |
| &tmp_rect)) { |
| result.left = tmp_rect.x(); |
| result.top = tmp_rect.y(); |
| result.right = tmp_rect.right(); |
| result.bottom = tmp_rect.bottom(); |
| if (text_input_client_->GetCompositionCharacterBounds(end_pos - 1, |
| &tmp_rect)) { |
| result.right = tmp_rect.right(); |
| result.bottom = tmp_rect.bottom(); |
| } else { |
| // We may not be able to get the last character bounds, so we use the |
| // first character bounds instead of returning TS_E_NOLAYOUT. |
| } |
| } else { |
| // Hack for PPAPI flash. PPAPI flash does not support GetCaretBounds, so |
| // it's better to return previous caret rectangle instead. |
| // TODO(nona, kinaba): Remove this hack. |
| if (start_pos == 0) { |
| result = text_input_client_->GetCaretBounds().ToRECT(); |
| } else { |
| return TS_E_NOLAYOUT; |
| } |
| } |
| } |
| |
| *rect = result; |
| *clipped = FALSE; |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::GetWnd(TsViewCookie view_cookie, |
| HWND* window_handle) { |
| if (!window_handle) |
| return E_INVALIDARG; |
| if (view_cookie != kViewCookie) |
| return E_INVALIDARG; |
| *window_handle = window_handle_; |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::InsertEmbedded(DWORD flags, |
| LONG acp_start, |
| LONG acp_end, |
| IDataObject* data_object, |
| TS_TEXTCHANGE* change) { |
| // We don't support any embedded objects. |
| NOTIMPLEMENTED(); |
| return E_NOTIMPL; |
| } |
| |
| STDMETHODIMP TSFTextStore::InsertEmbeddedAtSelection(DWORD flags, |
| IDataObject* data_object, |
| LONG* acp_start, |
| LONG* acp_end, |
| TS_TEXTCHANGE* change) { |
| // We don't support any embedded objects. |
| NOTIMPLEMENTED(); |
| return E_NOTIMPL; |
| } |
| |
| STDMETHODIMP TSFTextStore::InsertTextAtSelection(DWORD flags, |
| const wchar_t* text_buffer, |
| ULONG text_buffer_size, |
| LONG* acp_start, |
| LONG* acp_end, |
| TS_TEXTCHANGE* text_change) { |
| const LONG start_pos = selection_.start(); |
| const LONG end_pos = selection_.end(); |
| const LONG new_end_pos = start_pos + text_buffer_size; |
| |
| if (flags & TS_IAS_QUERYONLY) { |
| if (!HasReadLock()) |
| return TS_E_NOLOCK; |
| if (acp_start) |
| *acp_start = start_pos; |
| if (acp_end) { |
| *acp_end = end_pos; |
| } |
| return S_OK; |
| } |
| |
| if (!HasReadWriteLock()) |
| return TS_E_NOLOCK; |
| if (!text_buffer) |
| return E_INVALIDARG; |
| |
| DCHECK_LE(start_pos, end_pos); |
| string_buffer_ = string_buffer_.substr(0, start_pos) + |
| base::string16(text_buffer, text_buffer + text_buffer_size) + |
| string_buffer_.substr(end_pos); |
| if (acp_start) |
| *acp_start = start_pos; |
| if (acp_end) |
| *acp_end = new_end_pos; |
| if (text_change) { |
| text_change->acpStart = start_pos; |
| text_change->acpOldEnd = end_pos; |
| text_change->acpNewEnd = new_end_pos; |
| } |
| selection_.set_start(start_pos); |
| selection_.set_end(new_end_pos); |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::QueryInsert(LONG acp_test_start, |
| LONG acp_test_end, |
| ULONG text_size, |
| LONG* acp_result_start, |
| LONG* acp_result_end) { |
| if (!acp_result_start || !acp_result_end || acp_test_start > acp_test_end) |
| return E_INVALIDARG; |
| const LONG committed_size = static_cast<LONG>(committed_size_); |
| const LONG buffer_size = static_cast<LONG>(string_buffer_.size()); |
| *acp_result_start = |
| std::min(std::max(committed_size, acp_test_start), buffer_size); |
| *acp_result_end = |
| std::min(std::max(committed_size, acp_test_end), buffer_size); |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::QueryInsertEmbedded(const GUID* service, |
| const FORMATETC* format, |
| BOOL* insertable) { |
| if (!format) |
| return E_INVALIDARG; |
| // We don't support any embedded objects. |
| if (insertable) |
| *insertable = FALSE; |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::RequestAttrsAtPosition( |
| LONG acp_pos, |
| ULONG attribute_buffer_size, |
| const TS_ATTRID* attribute_buffer, |
| DWORD flags) { |
| // We don't support any document attributes. |
| // This method just returns S_OK, and the subsequently called |
| // RetrieveRequestedAttrs() returns 0 as the number of supported attributes. |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::RequestAttrsTransitioningAtPosition( |
| LONG acp_pos, |
| ULONG attribute_buffer_size, |
| const TS_ATTRID* attribute_buffer, |
| DWORD flags) { |
| // We don't support any document attributes. |
| // This method just returns S_OK, and the subsequently called |
| // RetrieveRequestedAttrs() returns 0 as the number of supported attributes. |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::RequestLock(DWORD lock_flags, HRESULT* result) { |
| if (!text_store_acp_sink_.Get()) |
| return E_FAIL; |
| if (!result) |
| return E_INVALIDARG; |
| |
| if (current_lock_type_ != 0) { |
| if (lock_flags & TS_LF_SYNC) { |
| // Can't lock synchronously. |
| *result = TS_E_SYNCHRONOUS; |
| return S_OK; |
| } |
| // Queue the lock request. |
| lock_queue_.push_back(lock_flags & TS_LF_READWRITE); |
| *result = TS_S_ASYNC; |
| return S_OK; |
| } |
| |
| // Lock |
| current_lock_type_ = (lock_flags & TS_LF_READWRITE); |
| |
| edit_flag_ = false; |
| const size_t last_committed_size = committed_size_; |
| |
| // Grant the lock. |
| *result = text_store_acp_sink_->OnLockGranted(current_lock_type_); |
| |
| // Unlock |
| current_lock_type_ = 0; |
| |
| // Handles the pending lock requests. |
| while (!lock_queue_.empty()) { |
| current_lock_type_ = lock_queue_.front(); |
| lock_queue_.pop_front(); |
| text_store_acp_sink_->OnLockGranted(current_lock_type_); |
| current_lock_type_ = 0; |
| } |
| |
| if (!edit_flag_) { |
| return S_OK; |
| } |
| |
| // If the text store is edited in OnLockGranted(), we may need to call |
| // TextInputClient::InsertText() or TextInputClient::SetCompositionText(). |
| const size_t new_committed_size = committed_size_; |
| const base::string16& new_committed_string = string_buffer_.substr( |
| last_committed_size, new_committed_size - last_committed_size); |
| const base::string16& composition_string = |
| string_buffer_.substr(new_committed_size); |
| |
| // If there is new committed string, calls TextInputClient::InsertText(). |
| if ((!new_committed_string.empty()) && text_input_client_) { |
| text_input_client_->InsertText(new_committed_string); |
| } |
| |
| // Calls TextInputClient::SetCompositionText(). |
| CompositionText composition_text; |
| composition_text.text = composition_string; |
| composition_text.ime_text_spans = text_spans_; |
| // Adjusts the offset. |
| for (size_t i = 0; i < composition_text.ime_text_spans.size(); ++i) { |
| composition_text.ime_text_spans[i].start_offset -= new_committed_size; |
| composition_text.ime_text_spans[i].end_offset -= new_committed_size; |
| } |
| if (selection_.start() < new_committed_size) { |
| composition_text.selection.set_start(0); |
| } else { |
| composition_text.selection.set_start(selection_.start() - |
| new_committed_size); |
| } |
| if (selection_.end() < new_committed_size) { |
| composition_text.selection.set_end(0); |
| } else { |
| composition_text.selection.set_end(selection_.end() - new_committed_size); |
| } |
| if (text_input_client_) |
| text_input_client_->SetCompositionText(composition_text); |
| |
| // If there is no composition string, clear the text store status. |
| // And call OnSelectionChange(), OnLayoutChange(), and OnTextChange(). |
| if ((composition_string.empty()) && (new_committed_size != 0)) { |
| string_buffer_.clear(); |
| committed_size_ = 0; |
| selection_.set_start(0); |
| selection_.set_end(0); |
| if (text_store_acp_sink_mask_ & TS_AS_SEL_CHANGE) |
| text_store_acp_sink_->OnSelectionChange(); |
| if (text_store_acp_sink_mask_ & TS_AS_LAYOUT_CHANGE) |
| text_store_acp_sink_->OnLayoutChange(TS_LC_CHANGE, 0); |
| if (text_store_acp_sink_mask_ & TS_AS_TEXT_CHANGE) { |
| TS_TEXTCHANGE textChange; |
| textChange.acpStart = 0; |
| textChange.acpOldEnd = new_committed_size; |
| textChange.acpNewEnd = 0; |
| text_store_acp_sink_->OnTextChange(0, &textChange); |
| } |
| } |
| |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::RequestSupportedAttrs( |
| DWORD /* flags */, // Seems that we should ignore this. |
| ULONG attribute_buffer_size, |
| const TS_ATTRID* attribute_buffer) { |
| if (!attribute_buffer) |
| return E_INVALIDARG; |
| if (!text_input_client_) |
| return E_FAIL; |
| // We support only input scope attribute. |
| for (size_t i = 0; i < attribute_buffer_size; ++i) { |
| if (IsEqualGUID(GUID_PROP_INPUTSCOPE, attribute_buffer[i])) |
| return S_OK; |
| } |
| return E_FAIL; |
| } |
| |
| STDMETHODIMP TSFTextStore::RetrieveRequestedAttrs( |
| ULONG attribute_buffer_size, |
| TS_ATTRVAL* attribute_buffer, |
| ULONG* attribute_buffer_copied) { |
| if (!attribute_buffer_copied) |
| return E_INVALIDARG; |
| if (!attribute_buffer) |
| return E_INVALIDARG; |
| if (!text_input_client_) |
| return E_UNEXPECTED; |
| // We support only input scope attribute. |
| *attribute_buffer_copied = 0; |
| if (attribute_buffer_size == 0) |
| return S_OK; |
| |
| attribute_buffer[0].dwOverlapId = 0; |
| attribute_buffer[0].idAttr = GUID_PROP_INPUTSCOPE; |
| attribute_buffer[0].varValue.vt = VT_UNKNOWN; |
| attribute_buffer[0].varValue.punkVal = |
| tsf_inputscope::CreateInputScope(text_input_client_->GetTextInputType(), |
| text_input_client_->GetTextInputMode()); |
| attribute_buffer[0].varValue.punkVal->AddRef(); |
| *attribute_buffer_copied = 1; |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::SetSelection( |
| ULONG selection_buffer_size, |
| const TS_SELECTION_ACP* selection_buffer) { |
| if (!HasReadWriteLock()) |
| return TF_E_NOLOCK; |
| if (selection_buffer_size > 0) { |
| const LONG start_pos = selection_buffer[0].acpStart; |
| const LONG end_pos = selection_buffer[0].acpEnd; |
| if (!((static_cast<LONG>(committed_size_) <= start_pos) && |
| (start_pos <= end_pos) && |
| (end_pos <= static_cast<LONG>(string_buffer_.size())))) { |
| return TF_E_INVALIDPOS; |
| } |
| selection_.set_start(start_pos); |
| selection_.set_end(end_pos); |
| } |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::SetText(DWORD flags, |
| LONG acp_start, |
| LONG acp_end, |
| const wchar_t* text_buffer, |
| ULONG text_buffer_size, |
| TS_TEXTCHANGE* text_change) { |
| if (!HasReadWriteLock()) |
| return TS_E_NOLOCK; |
| if (!((static_cast<LONG>(committed_size_) <= acp_start) && |
| (acp_start <= acp_end) && |
| (acp_end <= static_cast<LONG>(string_buffer_.size())))) { |
| return TS_E_INVALIDPOS; |
| } |
| |
| TS_SELECTION_ACP selection; |
| selection.acpStart = acp_start; |
| selection.acpEnd = acp_end; |
| selection.style.ase = TS_AE_NONE; |
| selection.style.fInterimChar = 0; |
| |
| HRESULT ret; |
| ret = SetSelection(1, &selection); |
| if (ret != S_OK) |
| return ret; |
| |
| TS_TEXTCHANGE change; |
| ret = InsertTextAtSelection(0, text_buffer, text_buffer_size, &acp_start, |
| &acp_end, &change); |
| if (ret != S_OK) |
| return ret; |
| |
| if (text_change) |
| *text_change = change; |
| |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::UnadviseSink(IUnknown* unknown) { |
| if (text_store_acp_sink_.Get() != unknown) |
| return CONNECT_E_NOCONNECTION; |
| text_store_acp_sink_.Reset(); |
| text_store_acp_sink_mask_ = 0; |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::OnStartComposition( |
| ITfCompositionView* composition_view, |
| BOOL* ok) { |
| if (ok) |
| *ok = TRUE; |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::OnUpdateComposition( |
| ITfCompositionView* composition_view, |
| ITfRange* range) { |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::OnEndComposition( |
| ITfCompositionView* composition_view) { |
| return S_OK; |
| } |
| |
| STDMETHODIMP TSFTextStore::OnEndEdit(ITfContext* context, |
| TfEditCookie read_only_edit_cookie, |
| ITfEditRecord* edit_record) { |
| if (!context || !edit_record) |
| return E_INVALIDARG; |
| |
| size_t committed_size; |
| ImeTextSpans spans; |
| if (!GetCompositionStatus(context, read_only_edit_cookie, &committed_size, |
| &spans)) { |
| return S_OK; |
| } |
| text_spans_ = spans; |
| committed_size_ = committed_size; |
| edit_flag_ = true; |
| return S_OK; |
| } |
| |
| bool TSFTextStore::GetDisplayAttribute(TfGuidAtom guid_atom, |
| TF_DISPLAYATTRIBUTE* attribute) { |
| GUID guid; |
| if (FAILED(category_manager_->GetGUID(guid_atom, &guid))) |
| return false; |
| |
| Microsoft::WRL::ComPtr<ITfDisplayAttributeInfo> display_attribute_info; |
| if (FAILED(display_attribute_manager_->GetDisplayAttributeInfo( |
| guid, display_attribute_info.GetAddressOf(), nullptr))) { |
| return false; |
| } |
| return SUCCEEDED(display_attribute_info->GetAttributeInfo(attribute)); |
| } |
| |
| bool TSFTextStore::GetCompositionStatus( |
| ITfContext* context, |
| const TfEditCookie read_only_edit_cookie, |
| size_t* committed_size, |
| ImeTextSpans* spans) { |
| DCHECK(context); |
| DCHECK(committed_size); |
| DCHECK(spans); |
| const GUID* rgGuids[2] = {&GUID_PROP_COMPOSING, &GUID_PROP_ATTRIBUTE}; |
| Microsoft::WRL::ComPtr<ITfReadOnlyProperty> track_property; |
| if (FAILED(context->TrackProperties(rgGuids, 2, nullptr, 0, |
| track_property.GetAddressOf()))) { |
| return false; |
| } |
| |
| *committed_size = 0; |
| spans->clear(); |
| Microsoft::WRL::ComPtr<ITfRange> start_to_end_range; |
| Microsoft::WRL::ComPtr<ITfRange> end_range; |
| if (FAILED(context->GetStart(read_only_edit_cookie, |
| start_to_end_range.GetAddressOf()))) { |
| return false; |
| } |
| if (FAILED(context->GetEnd(read_only_edit_cookie, end_range.GetAddressOf()))) |
| return false; |
| if (FAILED(start_to_end_range->ShiftEndToRange( |
| read_only_edit_cookie, end_range.Get(), TF_ANCHOR_END))) { |
| return false; |
| } |
| |
| Microsoft::WRL::ComPtr<IEnumTfRanges> ranges; |
| if (FAILED(track_property->EnumRanges(read_only_edit_cookie, |
| ranges.GetAddressOf(), |
| start_to_end_range.Get()))) { |
| return false; |
| } |
| |
| while (true) { |
| Microsoft::WRL::ComPtr<ITfRange> range; |
| if (ranges->Next(1, range.GetAddressOf(), nullptr) != S_OK) |
| break; |
| base::win::ScopedVariant value; |
| Microsoft::WRL::ComPtr<IEnumTfPropertyValue> enum_prop_value; |
| if (FAILED(track_property->GetValue(read_only_edit_cookie, range.Get(), |
| value.Receive()))) { |
| return false; |
| } |
| if (FAILED(value.AsInput()->punkVal->QueryInterface( |
| IID_PPV_ARGS(&enum_prop_value)))) |
| return false; |
| |
| TF_PROPERTYVAL property_value; |
| bool is_composition = false; |
| bool has_display_attribute = false; |
| TF_DISPLAYATTRIBUTE display_attribute = {}; |
| while (enum_prop_value->Next(1, &property_value, nullptr) == S_OK) { |
| if (IsEqualGUID(property_value.guidId, GUID_PROP_COMPOSING)) { |
| is_composition = (property_value.varValue.lVal == TRUE); |
| } else if (IsEqualGUID(property_value.guidId, GUID_PROP_ATTRIBUTE)) { |
| TfGuidAtom guid_atom = |
| static_cast<TfGuidAtom>(property_value.varValue.lVal); |
| if (GetDisplayAttribute(guid_atom, &display_attribute)) |
| has_display_attribute = true; |
| } |
| VariantClear(&property_value.varValue); |
| } |
| |
| Microsoft::WRL::ComPtr<ITfRangeACP> range_acp; |
| range.CopyTo(range_acp.GetAddressOf()); |
| LONG start_pos, length; |
| range_acp->GetExtent(&start_pos, &length); |
| if (!is_composition) { |
| if (*committed_size < static_cast<size_t>(start_pos + length)) |
| *committed_size = start_pos + length; |
| } else { |
| ImeTextSpan span; |
| span.start_offset = start_pos; |
| span.end_offset = start_pos + length; |
| span.underline_color = SK_ColorBLACK; |
| span.background_color = SK_ColorTRANSPARENT; |
| if (has_display_attribute) { |
| span.thickness = display_attribute.fBoldLine |
| ? ImeTextSpan::Thickness::kThick |
| : ImeTextSpan::Thickness::kThin; |
| } |
| spans->push_back(span); |
| } |
| } |
| return true; |
| } |
| |
| void TSFTextStore::SetFocusedTextInputClient( |
| HWND focused_window, |
| TextInputClient* text_input_client) { |
| window_handle_ = focused_window; |
| text_input_client_ = text_input_client; |
| } |
| |
| void TSFTextStore::RemoveFocusedTextInputClient( |
| TextInputClient* text_input_client) { |
| if (text_input_client_ == text_input_client) { |
| window_handle_ = nullptr; |
| text_input_client_ = nullptr; |
| } |
| } |
| |
| bool TSFTextStore::CancelComposition() { |
| // If there is an on-going document lock, we must not edit the text. |
| if (edit_flag_) |
| return false; |
| |
| if (string_buffer_.empty()) |
| return true; |
| |
| // Unlike ImmNotifyIME(NI_COMPOSITIONSTR, CPS_CANCEL, 0) in IMM32, TSF does |
| // not have a dedicated method to cancel composition. However, CUAS actually |
| // has a protocol conversion from CPS_CANCEL into TSF operations. According |
| // to the observations on Windows 7, TIPs are expected to cancel composition |
| // when an on-going composition text is replaced with an empty string. So |
| // we use the same operation to cancel composition here to minimize the risk |
| // of potential compatibility issues. |
| |
| const size_t previous_buffer_size = string_buffer_.size(); |
| string_buffer_.clear(); |
| committed_size_ = 0; |
| selection_.set_start(0); |
| selection_.set_end(0); |
| if (text_store_acp_sink_mask_ & TS_AS_SEL_CHANGE) |
| text_store_acp_sink_->OnSelectionChange(); |
| if (text_store_acp_sink_mask_ & TS_AS_LAYOUT_CHANGE) |
| text_store_acp_sink_->OnLayoutChange(TS_LC_CHANGE, 0); |
| if (text_store_acp_sink_mask_ & TS_AS_TEXT_CHANGE) { |
| TS_TEXTCHANGE textChange = {}; |
| textChange.acpStart = 0; |
| textChange.acpOldEnd = previous_buffer_size; |
| textChange.acpNewEnd = 0; |
| text_store_acp_sink_->OnTextChange(0, &textChange); |
| } |
| return true; |
| } |
| |
| bool TSFTextStore::ConfirmComposition() { |
| // If there is an on-going document lock, we must not edit the text. |
| if (edit_flag_) |
| return false; |
| |
| if (string_buffer_.empty()) |
| return true; |
| |
| // See the comment in TSFTextStore::CancelComposition. |
| // This logic is based on the observation about how to emulate |
| // ImmNotifyIME(NI_COMPOSITIONSTR, CPS_COMPLETE, 0) by CUAS. |
| |
| const base::string16& composition_text = |
| string_buffer_.substr(committed_size_); |
| if (!composition_text.empty()) |
| text_input_client_->InsertText(composition_text); |
| |
| const size_t previous_buffer_size = string_buffer_.size(); |
| string_buffer_.clear(); |
| committed_size_ = 0; |
| selection_.set_start(0); |
| selection_.set_end(0); |
| if (text_store_acp_sink_mask_ & TS_AS_SEL_CHANGE) |
| text_store_acp_sink_->OnSelectionChange(); |
| if (text_store_acp_sink_mask_ & TS_AS_LAYOUT_CHANGE) |
| text_store_acp_sink_->OnLayoutChange(TS_LC_CHANGE, 0); |
| if (text_store_acp_sink_mask_ & TS_AS_TEXT_CHANGE) { |
| TS_TEXTCHANGE textChange = {}; |
| textChange.acpStart = 0; |
| textChange.acpOldEnd = previous_buffer_size; |
| textChange.acpNewEnd = 0; |
| text_store_acp_sink_->OnTextChange(0, &textChange); |
| } |
| return true; |
| } |
| |
| void TSFTextStore::SendOnLayoutChange() { |
| if (text_store_acp_sink_ && (text_store_acp_sink_mask_ & TS_AS_LAYOUT_CHANGE)) |
| text_store_acp_sink_->OnLayoutChange(TS_LC_CHANGE, 0); |
| } |
| |
| bool TSFTextStore::HasReadLock() const { |
| return (current_lock_type_ & TS_LF_READ) == TS_LF_READ; |
| } |
| |
| bool TSFTextStore::HasReadWriteLock() const { |
| return (current_lock_type_ & TS_LF_READWRITE) == TS_LF_READWRITE; |
| } |
| |
| } // namespace ui |
