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// Copyright (c) 2012 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.
#include "ui/base/ime/win/tsf_input_scope.h"
#include <algorithm>
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/win/windows_version.h"
namespace ui {
namespace tsf_inputscope {
namespace {
void AppendNonTrivialInputScope(std::vector<InputScope>* input_scopes,
InputScope input_scope) {
DCHECK(input_scopes);
if (input_scope == IS_DEFAULT)
return;
if (std::find(input_scopes->begin(), input_scopes->end(), input_scope) !=
input_scopes->end())
return;
input_scopes->push_back(input_scope);
}
class TSFInputScope : public ITfInputScope {
public:
explicit TSFInputScope(const std::vector<InputScope>& input_scopes)
: input_scopes_(input_scopes),
ref_count_(0) {}
// ITfInputScope:
STDMETHOD_(ULONG, AddRef)() OVERRIDE {
return InterlockedIncrement(&ref_count_);
}
STDMETHOD_(ULONG, Release)() OVERRIDE {
const LONG count = InterlockedDecrement(&ref_count_);
if (!count) {
delete this;
return 0;
}
return static_cast<ULONG>(count);
}
STDMETHOD(QueryInterface)(REFIID iid, void** result) OVERRIDE {
if (!result)
return E_INVALIDARG;
if (iid == IID_IUnknown || iid == IID_ITfInputScope) {
*result = static_cast<ITfInputScope*>(this);
} else {
*result = NULL;
return E_NOINTERFACE;
}
AddRef();
return S_OK;
}
STDMETHOD(GetInputScopes)(InputScope** input_scopes, UINT* count) OVERRIDE {
if (!count || !input_scopes)
return E_INVALIDARG;
*input_scopes = static_cast<InputScope*>(CoTaskMemAlloc(
sizeof(InputScope) * input_scopes_.size()));
if (!input_scopes) {
*count = 0;
return E_OUTOFMEMORY;
}
for (size_t i = 0; i < input_scopes_.size(); ++i)
(*input_scopes)[i] = input_scopes_[i];
*count = input_scopes_.size();
return S_OK;
}
STDMETHOD(GetPhrase)(BSTR** phrases, UINT* count) OVERRIDE {
return E_NOTIMPL;
}
STDMETHOD(GetRegularExpression)(BSTR* regexp) OVERRIDE {
return E_NOTIMPL;
}
STDMETHOD(GetSRGS)(BSTR* srgs) OVERRIDE {
return E_NOTIMPL;
}
STDMETHOD(GetXML)(BSTR* xml) OVERRIDE {
return E_NOTIMPL;
}
private:
// The corresponding text input types.
std::vector<InputScope> input_scopes_;
// The refrence count of this instance.
volatile LONG ref_count_;
DISALLOW_COPY_AND_ASSIGN(TSFInputScope);
};
typedef HRESULT (WINAPI *SetInputScopesFunc)(HWND window_handle,
const InputScope* input_scope_list,
UINT num_input_scopes,
WCHAR**, /* unused */
UINT, /* unused */
WCHAR*, /* unused */
WCHAR* /* unused */);
SetInputScopesFunc g_set_input_scopes = NULL;
bool g_get_proc_done = false;
SetInputScopesFunc GetSetInputScopes() {
DCHECK_EQ(base::MessageLoop::TYPE_UI, base::MessageLoop::current()->type());
// Thread safety is not required because this function is under UI thread.
if (!g_get_proc_done) {
g_get_proc_done = true;
// For stability reasons, we do not support Windows XP.
if (base::win::GetVersion() < base::win::VERSION_VISTA)
return NULL;
HMODULE module = NULL;
if (!GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_PIN, L"msctf.dll",
&module)) {
return NULL;
}
g_set_input_scopes = reinterpret_cast<SetInputScopesFunc>(
GetProcAddress(module, "SetInputScopes"));
}
return g_set_input_scopes;
}
InputScope ConvertTextInputTypeToInputScope(TextInputType text_input_type) {
// Following mapping is based in IE10 on Windows 8.
switch (text_input_type) {
case TEXT_INPUT_TYPE_PASSWORD:
return IS_PASSWORD;
case TEXT_INPUT_TYPE_SEARCH:
return IS_SEARCH;
case TEXT_INPUT_TYPE_EMAIL:
return IS_EMAIL_SMTPEMAILADDRESS;
case TEXT_INPUT_TYPE_NUMBER:
return IS_NUMBER;
case TEXT_INPUT_TYPE_TELEPHONE:
return IS_TELEPHONE_FULLTELEPHONENUMBER;
case TEXT_INPUT_TYPE_URL:
return IS_URL;
default:
return IS_DEFAULT;
}
}
InputScope ConvertTextInputModeToInputScope(TextInputMode text_input_mode) {
switch (text_input_mode) {
case TEXT_INPUT_MODE_FULL_WIDTH_LATIN:
return IS_ALPHANUMERIC_FULLWIDTH;
case TEXT_INPUT_MODE_KANA:
return IS_HIRAGANA;
case TEXT_INPUT_MODE_KATAKANA:
return IS_KATAKANA_FULLWIDTH;
case TEXT_INPUT_MODE_NUMERIC:
return IS_NUMBER;
case TEXT_INPUT_MODE_TEL:
return IS_TELEPHONE_FULLTELEPHONENUMBER;
case TEXT_INPUT_MODE_EMAIL:
return IS_EMAIL_SMTPEMAILADDRESS;
case TEXT_INPUT_MODE_URL:
return IS_URL;
default:
return IS_DEFAULT;
}
}
} // namespace
std::vector<InputScope> GetInputScopes(TextInputType text_input_type,
TextInputMode text_input_mode) {
std::vector<InputScope> input_scopes;
AppendNonTrivialInputScope(&input_scopes,
ConvertTextInputTypeToInputScope(text_input_type));
AppendNonTrivialInputScope(&input_scopes,
ConvertTextInputModeToInputScope(text_input_mode));
if (input_scopes.empty())
input_scopes.push_back(IS_DEFAULT);
return input_scopes;
}
ITfInputScope* CreateInputScope(TextInputType text_input_type,
TextInputMode text_input_mode) {
return new TSFInputScope(GetInputScopes(text_input_type, text_input_mode));
}
void SetInputScopeForTsfUnawareWindow(
HWND window_handle,
TextInputType text_input_type,
TextInputMode text_input_mode) {
SetInputScopesFunc set_input_scopes = GetSetInputScopes();
if (!set_input_scopes)
return;
std::vector<InputScope> input_scopes = GetInputScopes(text_input_type,
text_input_mode);
set_input_scopes(window_handle, &input_scopes[0], input_scopes.size(), NULL,
0, NULL, NULL);
}
} // namespace tsf_inputscope
} // namespace ui
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