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5d7536729d
gecko/widget/gtk2/nsGtkIMModule.cpp
Nicholas Nethercote 5862e573ef Bug 826158 - Fix two -Wself-assign warnings in widget/gtk2/. r=karlt. 
--HG--
extra : rebase_source : cfbd0c5807e7b067a881583c6ac9f48b2848c021
2013-01-03 14:36:53 -08:00

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set ts=4 et sw=4 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifdef MOZ_PLATFORM_MAEMO
#define MAEMO_CHANGES
#endif
#ifdef MOZ_LOGGING
#define FORCE_PR_LOG /* Allow logging in the release build */
#endif // MOZ_LOGGING
#include "prlog.h"
#include "nsGtkIMModule.h"
#include "nsWindow.h"
#include "mozilla/Preferences.h"
#include "mozilla/Likely.h"
#ifdef MOZ_PLATFORM_MAEMO
#include "nsServiceManagerUtils.h"
#include "nsIObserverService.h"
#include "mozilla/Services.h"
#endif
using namespace mozilla;
using namespace mozilla::widget;
#ifdef PR_LOGGING
PRLogModuleInfo* gGtkIMLog = nullptr;
static const char*
GetRangeTypeName(uint32_t aRangeType)
{
switch (aRangeType) {
case NS_TEXTRANGE_RAWINPUT:
return "NS_TEXTRANGE_RAWINPUT";
case NS_TEXTRANGE_CONVERTEDTEXT:
return "NS_TEXTRANGE_CONVERTEDTEXT";
case NS_TEXTRANGE_SELECTEDRAWTEXT:
return "NS_TEXTRANGE_SELECTEDRAWTEXT";
case NS_TEXTRANGE_SELECTEDCONVERTEDTEXT:
return "NS_TEXTRANGE_SELECTEDCONVERTEDTEXT";
case NS_TEXTRANGE_CARETPOSITION:
return "NS_TEXTRANGE_CARETPOSITION";
default:
return "UNKNOWN SELECTION TYPE!!";
}
}
static const char*
GetEnabledStateName(uint32_t aState)
{
switch (aState) {
case IMEState::DISABLED:
return "DISABLED";
case IMEState::ENABLED:
return "ENABLED";
case IMEState::PASSWORD:
return "PASSWORD";
case IMEState::PLUGIN:
return "PLUG_IN";
default:
return "UNKNOWN ENABLED STATUS!!";
}
}
#endif
nsGtkIMModule* nsGtkIMModule::sLastFocusedModule = nullptr;
#ifdef MOZ_PLATFORM_MAEMO
static bool gIsVirtualKeyboardOpened = false;
#endif
nsGtkIMModule::nsGtkIMModule(nsWindow* aOwnerWindow) :
mOwnerWindow(aOwnerWindow), mLastFocusedWindow(nullptr),
mContext(nullptr),
#ifndef NS_IME_ENABLED_ON_PASSWORD_FIELD
mSimpleContext(nullptr),
#endif
mDummyContext(nullptr),
mCompositionStart(UINT32_MAX), mProcessingKeyEvent(nullptr),
mCompositionState(eCompositionState_NotComposing),
mIsIMFocused(false), mIgnoreNativeCompositionEvent(false)
{
#ifdef PR_LOGGING
if (!gGtkIMLog) {
gGtkIMLog = PR_NewLogModule("nsGtkIMModuleWidgets");
}
#endif
Init();
}
void
nsGtkIMModule::Init()
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): Init, mOwnerWindow=%p",
this, mOwnerWindow));
MozContainer* container = mOwnerWindow->GetMozContainer();
NS_PRECONDITION(container, "container is null");
GdkWindow* gdkWindow = gtk_widget_get_window(GTK_WIDGET(container));
// NOTE: gtk_im_*_new() abort (kill) the whole process when it fails.
// So, we don't need to check the result.
// Normal context.
mContext = gtk_im_multicontext_new();
gtk_im_context_set_client_window(mContext, gdkWindow);
g_signal_connect(mContext, "preedit_changed",
G_CALLBACK(nsGtkIMModule::OnChangeCompositionCallback),
this);
g_signal_connect(mContext, "retrieve_surrounding",
G_CALLBACK(nsGtkIMModule::OnRetrieveSurroundingCallback),
this);
g_signal_connect(mContext, "delete_surrounding",
G_CALLBACK(nsGtkIMModule::OnDeleteSurroundingCallback),
this);
g_signal_connect(mContext, "commit",
G_CALLBACK(nsGtkIMModule::OnCommitCompositionCallback),
this);
g_signal_connect(mContext, "preedit_start",
G_CALLBACK(nsGtkIMModule::OnStartCompositionCallback),
this);
g_signal_connect(mContext, "preedit_end",
G_CALLBACK(nsGtkIMModule::OnEndCompositionCallback),
this);
#ifndef NS_IME_ENABLED_ON_PASSWORD_FIELD
// Simple context
mSimpleContext = gtk_im_context_simple_new();
gtk_im_context_set_client_window(mSimpleContext, gdkWindow);
g_signal_connect(mSimpleContext, "preedit_changed",
G_CALLBACK(&nsGtkIMModule::OnChangeCompositionCallback),
this);
g_signal_connect(mSimpleContext, "retrieve_surrounding",
G_CALLBACK(&nsGtkIMModule::OnRetrieveSurroundingCallback),
this);
g_signal_connect(mSimpleContext, "delete_surrounding",
G_CALLBACK(&nsGtkIMModule::OnDeleteSurroundingCallback),
this);
g_signal_connect(mSimpleContext, "commit",
G_CALLBACK(&nsGtkIMModule::OnCommitCompositionCallback),
this);
g_signal_connect(mSimpleContext, "preedit_start",
G_CALLBACK(nsGtkIMModule::OnStartCompositionCallback),
this);
g_signal_connect(mSimpleContext, "preedit_end",
G_CALLBACK(nsGtkIMModule::OnEndCompositionCallback),
this);
#endif // NS_IME_ENABLED_ON_PASSWORD_FIELD
// Dummy context
mDummyContext = gtk_im_multicontext_new();
gtk_im_context_set_client_window(mDummyContext, gdkWindow);
}
nsGtkIMModule::~nsGtkIMModule()
{
if (this == sLastFocusedModule) {
sLastFocusedModule = nullptr;
}
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p) was gone", this));
}
void
nsGtkIMModule::OnDestroyWindow(nsWindow* aWindow)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): OnDestroyWindow, aWindow=%p, mLastFocusedWindow=%p, mOwnerWindow=%p, mLastFocusedModule=%p",
this, aWindow, mLastFocusedWindow, mOwnerWindow, sLastFocusedModule));
NS_PRECONDITION(aWindow, "aWindow must not be null");
if (mLastFocusedWindow == aWindow) {
CancelIMEComposition(aWindow);
if (mIsIMFocused) {
Blur();
}
mLastFocusedWindow = nullptr;
}
if (mOwnerWindow != aWindow) {
return;
}
if (sLastFocusedModule == this) {
sLastFocusedModule = nullptr;
}
/**
* NOTE:
* The given window is the owner of this, so, we must release the
* contexts now. But that might be referred from other nsWindows
* (they are children of this. But we don't know why there are the
* cases). So, we need to clear the pointers that refers to contexts
* and this if the other referrers are still alive. See bug 349727.
*/
if (mContext) {
PrepareToDestroyContext(mContext);
gtk_im_context_set_client_window(mContext, nullptr);
g_object_unref(mContext);
mContext = nullptr;
}
#ifndef NS_IME_ENABLED_ON_PASSWORD_FIELD
if (mSimpleContext) {
gtk_im_context_set_client_window(mSimpleContext, nullptr);
g_object_unref(mSimpleContext);
mSimpleContext = nullptr;
}
#endif // NS_IME_ENABLED_ON_PASSWORD_FIELD
if (mDummyContext) {
// mContext and mDummyContext have the same slaveType and signal_data
// so no need for another workaround_gtk_im_display_closed.
gtk_im_context_set_client_window(mDummyContext, nullptr);
g_object_unref(mDummyContext);
mDummyContext = nullptr;
}
mOwnerWindow = nullptr;
mLastFocusedWindow = nullptr;
mInputContext.mIMEState.mEnabled = IMEState::DISABLED;
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" SUCCEEDED, Completely destroyed"));
}
// Work around gtk bug http://bugzilla.gnome.org/show_bug.cgi?id=483223:
// (and the similar issue of GTK+ IIIM)
// The GTK+ XIM and IIIM modules register handlers for the "closed" signal
// on the display, but:
// * The signal handlers are not disconnected when the module is unloaded.
//
// The GTK+ XIM module has another problem:
// * When the signal handler is run (with the module loaded) it tries
// XFree (and fails) on a pointer that did not come from Xmalloc.
//
// To prevent these modules from being unloaded, use static variables to
// hold ref of GtkIMContext class.
// For GTK+ XIM module, to prevent the signal handler from being run,
// find the signal handlers and remove them.
//
// GtkIMContextXIMs share XOpenIM connections and display closed signal
// handlers (where possible).
void
nsGtkIMModule::PrepareToDestroyContext(GtkIMContext *aContext)
{
MozContainer* container = mOwnerWindow->GetMozContainer();
NS_PRECONDITION(container, "The container of the window is null");
GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT(aContext);
#if (MOZ_WIDGET_GTK == 2)
GtkIMContext *slave = multicontext->slave;
#else
GtkIMContext *slave = NULL; //TODO GTK3
#endif
if (!slave) {
return;
}
GType slaveType = G_TYPE_FROM_INSTANCE(slave);
const gchar *im_type_name = g_type_name(slaveType);
if (strcmp(im_type_name, "GtkIMContextXIM") == 0) {
if (gtk_check_version(2, 12, 1) == NULL) {
return; // gtk bug has been fixed
}
struct GtkIMContextXIM
{
GtkIMContext parent;
gpointer private_data;
// ... other fields
};
gpointer signal_data =
reinterpret_cast<GtkIMContextXIM*>(slave)->private_data;
if (!signal_data) {
return;
}
g_signal_handlers_disconnect_matched(
gtk_widget_get_display(GTK_WIDGET(container)),
G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, signal_data);
// Add a reference to prevent the XIM module from being unloaded
// and reloaded: each time the module is loaded and used, it
// opens (and doesn't close) new XOpenIM connections.
static gpointer gtk_xim_context_class =
g_type_class_ref(slaveType);
// Mute unused variable warning:
(void)gtk_xim_context_class;
} else if (strcmp(im_type_name, "GtkIMContextIIIM") == 0) {
// Add a reference to prevent the IIIM module from being unloaded
static gpointer gtk_iiim_context_class =
g_type_class_ref(slaveType);
// Mute unused variable warning:
(void)gtk_iiim_context_class;
}
}
void
nsGtkIMModule::OnFocusWindow(nsWindow* aWindow)
{
if (MOZ_UNLIKELY(IsDestroyed())) {
return;
}
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): OnFocusWindow, aWindow=%p, mLastFocusedWindow=%p",
this, aWindow, mLastFocusedWindow));
mLastFocusedWindow = aWindow;
Focus();
}
void
nsGtkIMModule::OnBlurWindow(nsWindow* aWindow)
{
if (MOZ_UNLIKELY(IsDestroyed())) {
return;
}
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): OnBlurWindow, aWindow=%p, mLastFocusedWindow=%p, mIsIMFocused=%s",
this, aWindow, mLastFocusedWindow, mIsIMFocused ? "YES" : "NO"));
if (!mIsIMFocused || mLastFocusedWindow != aWindow) {
return;
}
Blur();
}
bool
nsGtkIMModule::OnKeyEvent(nsWindow* aCaller, GdkEventKey* aEvent,
bool aKeyDownEventWasSent /* = false */)
{
NS_PRECONDITION(aEvent, "aEvent must be non-null");
if (!IsEditable() || MOZ_UNLIKELY(IsDestroyed())) {
return false;
}
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): OnKeyEvent, aCaller=%p, aKeyDownEventWasSent=%s",
this, aCaller, aKeyDownEventWasSent ? "TRUE" : "FALSE"));
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" aEvent: type=%s, keyval=%s, unicode=0x%X",
aEvent->type == GDK_KEY_PRESS ? "GDK_KEY_PRESS" :
aEvent->type == GDK_KEY_RELEASE ? "GDK_KEY_RELEASE" : "Unknown",
gdk_keyval_name(aEvent->keyval),
gdk_keyval_to_unicode(aEvent->keyval)));
if (aCaller != mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, the caller isn't focused window, mLastFocusedWindow=%p",
mLastFocusedWindow));
return false;
}
GtkIMContext* im = GetContext();
if (MOZ_UNLIKELY(!im)) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no context"));
return false;
}
mKeyDownEventWasSent = aKeyDownEventWasSent;
mFilterKeyEvent = true;
mProcessingKeyEvent = aEvent;
gboolean isFiltered = gtk_im_context_filter_keypress(im, aEvent);
mProcessingKeyEvent = nullptr;
// We filter the key event if the event was not committed (because
// it's probably part of a composition) or if the key event was
// committed _and_ changed. This way we still let key press
// events go through as simple key press events instead of
// composed characters.
bool filterThisEvent = isFiltered && mFilterKeyEvent;
if (IsComposing() && !isFiltered) {
if (aEvent->type == GDK_KEY_PRESS) {
if (!mDispatchedCompositionString.IsEmpty()) {
// If there is composition string, we shouldn't dispatch
// any keydown events during composition.
filterThisEvent = true;
} else {
// A Hangul input engine for SCIM doesn't emit preedit_end
// signal even when composition string becomes empty. On the
// other hand, we should allow to make composition with empty
// string for other languages because there *might* be such
// IM. For compromising this issue, we should dispatch
// compositionend event, however, we don't need to reset IM
// actually.
CommitCompositionBy(EmptyString());
filterThisEvent = false;
}
} else {
// Key release event may not be consumed by IM, however, we
// shouldn't dispatch any keyup event during composition.
filterThisEvent = true;
}
}
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" filterThisEvent=%s (isFiltered=%s, mFilterKeyEvent=%s)",
filterThisEvent ? "TRUE" : "FALSE", isFiltered ? "YES" : "NO",
mFilterKeyEvent ? "YES" : "NO"));
return filterThisEvent;
}
void
nsGtkIMModule::OnFocusChangeInGecko(bool aFocus)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): OnFocusChangeInGecko, aFocus=%s, "
"mCompositionState=%s, mIsIMFocused=%s, "
"mIgnoreNativeCompositionEvent=%s",
this, aFocus ? "YES" : "NO", GetCompositionStateName(),
mIsIMFocused ? "YES" : "NO",
mIgnoreNativeCompositionEvent ? "YES" : "NO"));
// We shouldn't carry over the removed string to another editor.
mSelectedString.Truncate();
if (aFocus) {
// If we failed to commit forcedely in previous focused editor,
// we should reopen the gate for native signals in new focused editor.
mIgnoreNativeCompositionEvent = false;
}
}
void
nsGtkIMModule::ResetIME()
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): ResetIME, mCompositionState=%s, mIsIMFocused=%s",
this, GetCompositionStateName(), mIsIMFocused ? "YES" : "NO"));
GtkIMContext *im = GetContext();
if (MOZ_UNLIKELY(!im)) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no context"));
return;
}
mIgnoreNativeCompositionEvent = true;
gtk_im_context_reset(im);
}
nsresult
nsGtkIMModule::ResetInputState(nsWindow* aCaller)
{
if (MOZ_UNLIKELY(IsDestroyed())) {
return NS_OK;
}
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): ResetInputState, aCaller=%p, mCompositionState=%s",
this, aCaller, GetCompositionStateName()));
if (aCaller != mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" WARNING: the caller isn't focused window, mLastFocusedWindow=%p",
mLastFocusedWindow));
return NS_OK;
}
if (!IsComposing()) {
return NS_OK;
}
// XXX We should commit composition ourselves temporary...
ResetIME();
CommitCompositionBy(mDispatchedCompositionString);
return NS_OK;
}
nsresult
nsGtkIMModule::CancelIMEComposition(nsWindow* aCaller)
{
if (MOZ_UNLIKELY(IsDestroyed())) {
return NS_OK;
}
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): CancelIMEComposition, aCaller=%p",
this, aCaller));
if (aCaller != mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, the caller isn't focused window, mLastFocusedWindow=%p",
mLastFocusedWindow));
return NS_OK;
}
if (!IsComposing()) {
return NS_OK;
}
GtkIMContext *im = GetContext();
if (MOZ_UNLIKELY(!im)) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no context"));
return NS_OK;
}
ResetIME();
CommitCompositionBy(EmptyString());
return NS_OK;
}
void
nsGtkIMModule::SetInputContext(nsWindow* aCaller,
const InputContext* aContext,
const InputContextAction* aAction)
{
if (MOZ_UNLIKELY(IsDestroyed())) {
return;
}
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): SetInputContext, aCaller=%p, aState=%s mHTMLInputType=%s",
this, aCaller, GetEnabledStateName(aContext->mIMEState.mEnabled),
NS_ConvertUTF16toUTF8(aContext->mHTMLInputType).get()));
if (aCaller != mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, the caller isn't focused window, mLastFocusedWindow=%p",
mLastFocusedWindow));
return;
}
if (!mContext) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no context"));
return;
}
if (sLastFocusedModule != this) {
mInputContext = *aContext;
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" SUCCEEDED, but we're not active"));
return;
}
bool changingEnabledState =
aContext->mIMEState.mEnabled != mInputContext.mIMEState.mEnabled;
// Release current IME focus if IME is enabled.
if (changingEnabledState && IsEditable()) {
ResetInputState(mLastFocusedWindow);
Blur();
}
mInputContext = *aContext;
// Even when aState is not enabled state, we need to set IME focus.
// Because some IMs are updating the status bar of them at this time.
// Be aware, don't use aWindow here because this method shouldn't move
// focus actually.
if (changingEnabledState) {
Focus();
}
#if (MOZ_PLATFORM_MAEMO == 5)
GtkIMContext *im = GetContext();
if (im) {
if (IsEnabled()) {
// Ensure that opening the virtual keyboard is allowed for this specific
// InputContext depending on the content.ime.strict.policy pref
if (mInputContext.mIMEState.mEnabled != IMEState::DISABLED &&
mInputContext.mIMEState.mEnabled != IMEState::PLUGIN &&
Preferences::GetBool("content.ime.strict_policy", false) &&
!aAction->ContentGotFocusByTrustedCause() &&
!aAction->UserMightRequestOpenVKB()) {
return;
}
// It is not desired that the hildon's autocomplete mechanism displays
// user previous entered passwds, so lets make completions invisible
// in these cases.
int mode;
g_object_get(im, "hildon-input-mode", &mode, NULL);
if (mInputContext.mIMEState.mEnabled == IMEState::ENABLED ||
mInputContext.mIMEState.mEnabled == IMEState::PLUGIN) {
mode &= ~HILDON_GTK_INPUT_MODE_INVISIBLE;
} else if (mInputContext.mIMEState.mEnabled == IMEState::PASSWORD) {
mode |= HILDON_GTK_INPUT_MODE_INVISIBLE;
}
// Turn off auto-capitalization for editboxes
mode &= ~HILDON_GTK_INPUT_MODE_AUTOCAP;
// Turn off predictive dictionaries for editboxes
mode &= ~HILDON_GTK_INPUT_MODE_DICTIONARY;
g_object_set(im, "hildon-input-mode",
(HildonGtkInputMode)mode, NULL);
gIsVirtualKeyboardOpened = true;
hildon_gtk_im_context_show(im);
} else {
gIsVirtualKeyboardOpened = false;
hildon_gtk_im_context_hide(im);
}
}
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
if (observerService) {
nsAutoString rectBuf;
int32_t x, y, w, h;
gdk_window_get_position(aCaller->GetGdkWindow(), &x, &y);
gdk_window_get_size(aCaller->GetGdkWindow(), &w, &h);
rectBuf.Assign(NS_LITERAL_STRING("{\"left\": "));
rectBuf.AppendInt(x);
rectBuf.Append(NS_LITERAL_STRING(", \"top\": "));
rectBuf.AppendInt(y);
rectBuf.Append(NS_LITERAL_STRING(", \"right\": "));
rectBuf.AppendInt(w);
rectBuf.Append(NS_LITERAL_STRING(", \"bottom\": "));
rectBuf.AppendInt(h);
rectBuf.Append(NS_LITERAL_STRING("}"));
observerService->NotifyObservers(nullptr, "softkb-change",
rectBuf.get());
}
#endif
}
InputContext
nsGtkIMModule::GetInputContext()
{
mInputContext.mIMEState.mOpen = IMEState::OPEN_STATE_NOT_SUPPORTED;
return mInputContext;
}
/* static */
bool
nsGtkIMModule::IsVirtualKeyboardOpened()
{
#ifdef MOZ_PLATFORM_MAEMO
return gIsVirtualKeyboardOpened;
#else
return false;
#endif
}
GtkIMContext*
nsGtkIMModule::GetContext()
{
if (IsEnabled()) {
return mContext;
}
#ifndef NS_IME_ENABLED_ON_PASSWORD_FIELD
if (mInputContext.mIMEState.mEnabled == IMEState::PASSWORD) {
return mSimpleContext;
}
#endif // NS_IME_ENABLED_ON_PASSWORD_FIELD
return mDummyContext;
}
bool
nsGtkIMModule::IsEnabled()
{
return mInputContext.mIMEState.mEnabled == IMEState::ENABLED ||
#ifdef NS_IME_ENABLED_ON_PASSWORD_FIELD
mInputContext.mIMEState.mEnabled == IMEState::PASSWORD ||
#endif // NS_IME_ENABLED_ON_PASSWORD_FIELD
mInputContext.mIMEState.mEnabled == IMEState::PLUGIN;
}
bool
nsGtkIMModule::IsEditable()
{
return mInputContext.mIMEState.mEnabled == IMEState::ENABLED ||
mInputContext.mIMEState.mEnabled == IMEState::PLUGIN ||
mInputContext.mIMEState.mEnabled == IMEState::PASSWORD;
}
void
nsGtkIMModule::Focus()
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): Focus, sLastFocusedModule=%p",
this, sLastFocusedModule));
if (mIsIMFocused) {
NS_ASSERTION(sLastFocusedModule == this,
"We're not active, but the IM was focused?");
return;
}
GtkIMContext *im = GetContext();
if (!im) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no context"));
return;
}
if (sLastFocusedModule && sLastFocusedModule != this) {
sLastFocusedModule->Blur();
}
sLastFocusedModule = this;
gtk_im_context_focus_in(im);
mIsIMFocused = true;
if (!IsEnabled()) {
// We should release IME focus for uim and scim.
// These IMs are using snooper that is released at losing focus.
Blur();
}
}
void
nsGtkIMModule::Blur()
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): Blur, mIsIMFocused=%s",
this, mIsIMFocused ? "YES" : "NO"));
if (!mIsIMFocused) {
return;
}
GtkIMContext *im = GetContext();
if (!im) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no context"));
return;
}
gtk_im_context_focus_out(im);
mIsIMFocused = false;
}
/* static */
void
nsGtkIMModule::OnStartCompositionCallback(GtkIMContext *aContext,
nsGtkIMModule* aModule)
{
aModule->OnStartCompositionNative(aContext);
}
void
nsGtkIMModule::OnStartCompositionNative(GtkIMContext *aContext)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): OnStartCompositionNative, aContext=%p",
this, aContext));
// See bug 472635, we should do nothing if IM context doesn't match.
if (GetContext() != aContext) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, given context doesn't match, GetContext()=%p",
GetContext()));
return;
}
if (!DispatchCompositionStart()) {
return;
}
SetCursorPosition(mCompositionStart);
}
/* static */
void
nsGtkIMModule::OnEndCompositionCallback(GtkIMContext *aContext,
nsGtkIMModule* aModule)
{
aModule->OnEndCompositionNative(aContext);
}
void
nsGtkIMModule::OnEndCompositionNative(GtkIMContext *aContext)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): OnEndCompositionNative, aContext=%p",
this, aContext));
// See bug 472635, we should do nothing if IM context doesn't match.
if (GetContext() != aContext) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, given context doesn't match, GetContext()=%p",
GetContext()));
return;
}
bool shouldIgnoreThisEvent = ShouldIgnoreNativeCompositionEvent();
// Finish the cancelling mode here rather than DispatchCompositionEnd()
// because DispatchCompositionEnd() is called ourselves when we need to
// commit the composition string *before* the focus moves completely.
// Note that the native commit can be fired *after* ResetIME().
mIgnoreNativeCompositionEvent = false;
if (!IsComposing() || shouldIgnoreThisEvent) {
// If we already handled the commit event, we should do nothing here.
return;
}
// Be aware, widget can be gone
DispatchCompositionEnd();
}
/* static */
void
nsGtkIMModule::OnChangeCompositionCallback(GtkIMContext *aContext,
nsGtkIMModule* aModule)
{
aModule->OnChangeCompositionNative(aContext);
}
void
nsGtkIMModule::OnChangeCompositionNative(GtkIMContext *aContext)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): OnChangeCompositionNative, aContext=%p",
this, aContext));
// See bug 472635, we should do nothing if IM context doesn't match.
if (GetContext() != aContext) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, given context doesn't match, GetContext()=%p",
GetContext()));
return;
}
if (ShouldIgnoreNativeCompositionEvent()) {
return;
}
nsAutoString compositionString;
GetCompositionString(compositionString);
if (!IsComposing() && compositionString.IsEmpty()) {
mDispatchedCompositionString.Truncate();
return; // Don't start the composition with empty string.
}
// Be aware, widget can be gone
DispatchTextEvent(compositionString, false);
}
/* static */
gboolean
nsGtkIMModule::OnRetrieveSurroundingCallback(GtkIMContext *aContext,
nsGtkIMModule *aModule)
{
return aModule->OnRetrieveSurroundingNative(aContext);
}
gboolean
nsGtkIMModule::OnRetrieveSurroundingNative(GtkIMContext *aContext)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): OnRetrieveSurroundingNative, aContext=%p, current context=%p",
this, aContext, GetContext()));
if (GetContext() != aContext) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, given context doesn't match, GetContext()=%p",
GetContext()));
return FALSE;
}
nsAutoString uniStr;
uint32_t cursorPos;
if (NS_FAILED(GetCurrentParagraph(uniStr, cursorPos))) {
return FALSE;
}
NS_ConvertUTF16toUTF8 utf8Str(nsDependentSubstring(uniStr, 0, cursorPos));
uint32_t cursorPosInUTF8 = utf8Str.Length();
AppendUTF16toUTF8(nsDependentSubstring(uniStr, cursorPos), utf8Str);
gtk_im_context_set_surrounding(aContext, utf8Str.get(), utf8Str.Length(),
cursorPosInUTF8);
return TRUE;
}
/* static */
gboolean
nsGtkIMModule::OnDeleteSurroundingCallback(GtkIMContext *aContext,
gint aOffset,
gint aNChars,
nsGtkIMModule *aModule)
{
return aModule->OnDeleteSurroundingNative(aContext, aOffset, aNChars);
}
gboolean
nsGtkIMModule::OnDeleteSurroundingNative(GtkIMContext *aContext,
gint aOffset,
gint aNChars)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): OnDeleteSurroundingNative, aContext=%p, current context=%p",
this, aContext, GetContext()));
if (GetContext() != aContext) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, given context doesn't match, GetContext()=%p",
GetContext()));
return FALSE;
}
if (NS_SUCCEEDED(DeleteText(aOffset, (uint32_t)aNChars))) {
return TRUE;
}
// failed
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, cannot delete text"));
return FALSE;
}
/* static */
void
nsGtkIMModule::OnCommitCompositionCallback(GtkIMContext *aContext,
const gchar *aString,
nsGtkIMModule* aModule)
{
aModule->OnCommitCompositionNative(aContext, aString);
}
void
nsGtkIMModule::OnCommitCompositionNative(GtkIMContext *aContext,
const gchar *aUTF8Char)
{
const gchar emptyStr = 0;
const gchar *commitString = aUTF8Char ? aUTF8Char : &emptyStr;
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): OnCommitCompositionNative, aContext=%p, current context=%p, commitString=\"%s\"",
this, aContext, GetContext(), commitString));
// See bug 472635, we should do nothing if IM context doesn't match.
if (GetContext() != aContext) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, given context doesn't match, GetContext()=%p",
GetContext()));
return;
}
// If we are not in composition and committing with empty string,
// we need to do nothing because if we continued to handle this
// signal, we would dispatch compositionstart, text, compositionend
// events with empty string. Of course, they are unnecessary events
// for Web applications and our editor.
if (!IsComposing() && !commitString[0]) {
return;
}
if (ShouldIgnoreNativeCompositionEvent()) {
return;
}
// If IME doesn't change their keyevent that generated this commit,
// don't send it through XIM - just send it as a normal key press
// event.
if (!IsComposing() && mProcessingKeyEvent) {
char keyval_utf8[8]; /* should have at least 6 bytes of space */
gint keyval_utf8_len;
guint32 keyval_unicode;
keyval_unicode = gdk_keyval_to_unicode(mProcessingKeyEvent->keyval);
keyval_utf8_len = g_unichar_to_utf8(keyval_unicode, keyval_utf8);
keyval_utf8[keyval_utf8_len] = '\0';
if (!strcmp(commitString, keyval_utf8)) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): OnCommitCompositionNative, we'll send normal key event",
this));
mFilterKeyEvent = false;
return;
}
}
NS_ConvertUTF8toUTF16 str(commitString);
CommitCompositionBy(str); // Be aware, widget can be gone
}
bool
nsGtkIMModule::CommitCompositionBy(const nsAString& aString)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): CommitCompositionBy, aString=\"%s\", "
"mDispatchedCompositionString=\"%s\"",
this, NS_ConvertUTF16toUTF8(aString).get(),
NS_ConvertUTF16toUTF8(mDispatchedCompositionString).get()));
if (!DispatchTextEvent(aString, true)) {
return false;
}
// We should dispatch the compositionend event here because some IMEs
// might not fire "preedit_end" native event.
return DispatchCompositionEnd(); // Be aware, widget can be gone
}
void
nsGtkIMModule::GetCompositionString(nsAString &aCompositionString)
{
gchar *preedit_string;
gint cursor_pos;
PangoAttrList *feedback_list;
gtk_im_context_get_preedit_string(GetContext(), &preedit_string,
&feedback_list, &cursor_pos);
if (preedit_string && *preedit_string) {
CopyUTF8toUTF16(preedit_string, aCompositionString);
} else {
aCompositionString.Truncate();
}
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): GetCompositionString, result=\"%s\"",
this, preedit_string));
pango_attr_list_unref(feedback_list);
g_free(preedit_string);
}
bool
nsGtkIMModule::DispatchCompositionStart()
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): DispatchCompositionStart", this));
if (IsComposing()) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" WARNING, we're already in composition"));
return true;
}
if (!mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no focused window in this module"));
return false;
}
nsEventStatus status;
nsQueryContentEvent selection(true, NS_QUERY_SELECTED_TEXT,
mLastFocusedWindow);
InitEvent(selection);
mLastFocusedWindow->DispatchEvent(&selection, status);
if (!selection.mSucceeded || selection.mReply.mOffset == UINT32_MAX) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, cannot query the selection offset"));
return false;
}
// XXX The composition start point might be changed by composition events
// even though we strongly hope it doesn't happen.
// Every composition event should have the start offset for the result
// because it may high cost if we query the offset every time.
mCompositionStart = selection.mReply.mOffset;
mDispatchedCompositionString.Truncate();
if (mProcessingKeyEvent && !mKeyDownEventWasSent &&
mProcessingKeyEvent->type == GDK_KEY_PRESS) {
// If this composition is started by a native keydown event, we need to
// dispatch our keydown event here (before composition start).
nsCOMPtr<nsIWidget> kungFuDeathGrip = mLastFocusedWindow;
bool isCancelled;
mLastFocusedWindow->DispatchKeyDownEvent(mProcessingKeyEvent,
&isCancelled);
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" keydown event is dispatched"));
if (static_cast<nsWindow*>(kungFuDeathGrip.get())->IsDestroyed() ||
kungFuDeathGrip != mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" NOTE, the focused widget was destroyed/changed by keydown event"));
return false;
}
}
if (mIgnoreNativeCompositionEvent) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" WARNING, mIgnoreNativeCompositionEvent is already TRUE, but we forcedly reset"));
mIgnoreNativeCompositionEvent = false;
}
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" mCompositionStart=%u", mCompositionStart));
mCompositionState = eCompositionState_CompositionStartDispatched;
nsCompositionEvent compEvent(true, NS_COMPOSITION_START,
mLastFocusedWindow);
InitEvent(compEvent);
nsCOMPtr<nsIWidget> kungFuDeathGrip = mLastFocusedWindow;
mLastFocusedWindow->DispatchEvent(&compEvent, status);
if (static_cast<nsWindow*>(kungFuDeathGrip.get())->IsDestroyed() ||
kungFuDeathGrip != mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" NOTE, the focused widget was destroyed/changed by compositionstart event"));
return false;
}
return true;
}
bool
nsGtkIMModule::DispatchCompositionEnd()
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): DispatchCompositionEnd, "
"mDispatchedCompositionString=\"%s\"",
this, NS_ConvertUTF16toUTF8(mDispatchedCompositionString).get()));
if (!IsComposing()) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" WARNING, we have alrady finished the composition"));
return false;
}
if (!mLastFocusedWindow) {
mDispatchedCompositionString.Truncate();
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no focused window in this module"));
return false;
}
nsCompositionEvent compEvent(true, NS_COMPOSITION_END,
mLastFocusedWindow);
InitEvent(compEvent);
compEvent.data = mDispatchedCompositionString;
nsEventStatus status;
nsCOMPtr<nsIWidget> kungFuDeathGrip = mLastFocusedWindow;
mLastFocusedWindow->DispatchEvent(&compEvent, status);
mCompositionState = eCompositionState_NotComposing;
mCompositionStart = UINT32_MAX;
mDispatchedCompositionString.Truncate();
if (static_cast<nsWindow*>(kungFuDeathGrip.get())->IsDestroyed() ||
kungFuDeathGrip != mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" NOTE, the focused widget was destroyed/changed by compositionend event"));
return false;
}
return true;
}
bool
nsGtkIMModule::DispatchTextEvent(const nsAString &aCompositionString,
bool aIsCommit)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): DispatchTextEvent, aIsCommit=%s",
this, aIsCommit ? "TRUE" : "FALSE"));
if (!mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no focused window in this module"));
return false;
}
if (!IsComposing()) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" The composition wasn't started, force starting..."));
nsCOMPtr<nsIWidget> kungFuDeathGrip = mLastFocusedWindow;
if (!DispatchCompositionStart()) {
return false;
}
}
nsEventStatus status;
nsRefPtr<nsWindow> lastFocusedWindow = mLastFocusedWindow;
if (aCompositionString != mDispatchedCompositionString) {
nsCompositionEvent compositionUpdate(true, NS_COMPOSITION_UPDATE,
mLastFocusedWindow);
InitEvent(compositionUpdate);
compositionUpdate.data = aCompositionString;
mDispatchedCompositionString = aCompositionString;
mLastFocusedWindow->DispatchEvent(&compositionUpdate, status);
if (lastFocusedWindow->IsDestroyed() ||
lastFocusedWindow != mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" NOTE, the focused widget was destroyed/changed by compositionupdate"));
return false;
}
}
// Store the selected string which will be removed by following text event.
if (mCompositionState == eCompositionState_CompositionStartDispatched) {
// XXX We should assume, for now, any web applications don't change
// selection at handling this text event.
nsQueryContentEvent querySelectedTextEvent(true,
NS_QUERY_SELECTED_TEXT,
mLastFocusedWindow);
mLastFocusedWindow->DispatchEvent(&querySelectedTextEvent, status);
if (querySelectedTextEvent.mSucceeded) {
mSelectedString = querySelectedTextEvent.mReply.mString;
mCompositionStart = querySelectedTextEvent.mReply.mOffset;
}
}
nsTextEvent textEvent(true, NS_TEXT_TEXT, mLastFocusedWindow);
InitEvent(textEvent);
uint32_t targetOffset = mCompositionStart;
nsAutoTArray<nsTextRange, 4> textRanges;
if (!aIsCommit) {
// NOTE: SetTextRangeList() assumes that mDispatchedCompositionString
// has been updated already.
SetTextRangeList(textRanges);
for (uint32_t i = 0; i < textRanges.Length(); i++) {
nsTextRange& range = textRanges[i];
if (range.mRangeType == NS_TEXTRANGE_SELECTEDRAWTEXT ||
range.mRangeType == NS_TEXTRANGE_SELECTEDCONVERTEDTEXT) {
targetOffset += range.mStartOffset;
break;
}
}
}
textEvent.rangeCount = textRanges.Length();
textEvent.rangeArray = textRanges.Elements();
textEvent.theText = mDispatchedCompositionString.get();
mCompositionState = aIsCommit ?
eCompositionState_CommitTextEventDispatched :
eCompositionState_TextEventDispatched;
mLastFocusedWindow->DispatchEvent(&textEvent, status);
if (lastFocusedWindow->IsDestroyed() ||
lastFocusedWindow != mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" NOTE, the focused widget was destroyed/changed by text event"));
return false;
}
SetCursorPosition(targetOffset);
return true;
}
void
nsGtkIMModule::SetTextRangeList(nsTArray<nsTextRange> &aTextRangeList)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): SetTextRangeList", this));
NS_PRECONDITION(aTextRangeList.IsEmpty(), "aTextRangeList must be empty");
gchar *preedit_string;
gint cursor_pos;
PangoAttrList *feedback_list;
gtk_im_context_get_preedit_string(GetContext(), &preedit_string,
&feedback_list, &cursor_pos);
if (!preedit_string || !*preedit_string) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" preedit_string is null"));
pango_attr_list_unref(feedback_list);
g_free(preedit_string);
return;
}
PangoAttrIterator* iter;
iter = pango_attr_list_get_iterator(feedback_list);
if (!iter) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, iterator couldn't be allocated"));
pango_attr_list_unref(feedback_list);
g_free(preedit_string);
return;
}
/*
* Depend on gtk2's implementation on XIM support.
* In aFeedback got from gtk2, there are only three types of data:
* PANGO_ATTR_UNDERLINE, PANGO_ATTR_FOREGROUND, PANGO_ATTR_BACKGROUND.
* Corresponding to XIMUnderline, XIMReverse.
* Don't take PANGO_ATTR_BACKGROUND into account, since
* PANGO_ATTR_BACKGROUND and PANGO_ATTR_FOREGROUND are always
* a couple.
*/
do {
PangoAttribute* attrUnderline =
pango_attr_iterator_get(iter, PANGO_ATTR_UNDERLINE);
PangoAttribute* attrForeground =
pango_attr_iterator_get(iter, PANGO_ATTR_FOREGROUND);
if (!attrUnderline && !attrForeground) {
continue;
}
// Get the range of the current attribute(s)
gint start, end;
pango_attr_iterator_range(iter, &start, &end);
nsTextRange range;
// XIMReverse | XIMUnderline
if (attrUnderline && attrForeground) {
range.mRangeType = NS_TEXTRANGE_SELECTEDCONVERTEDTEXT;
}
// XIMUnderline
else if (attrUnderline) {
range.mRangeType = NS_TEXTRANGE_CONVERTEDTEXT;
}
// XIMReverse
else if (attrForeground) {
range.mRangeType = NS_TEXTRANGE_SELECTEDRAWTEXT;
} else {
range.mRangeType = NS_TEXTRANGE_RAWINPUT;
}
gunichar2* uniStr = nullptr;
if (start == 0) {
range.mStartOffset = 0;
} else {
glong uniStrLen;
uniStr = g_utf8_to_utf16(preedit_string, start,
NULL, &uniStrLen, NULL);
if (uniStr) {
range.mStartOffset = uniStrLen;
g_free(uniStr);
uniStr = nullptr;
}
}
glong uniStrLen;
uniStr = g_utf8_to_utf16(preedit_string + start, end - start,
NULL, &uniStrLen, NULL);
if (!uniStr) {
range.mEndOffset = range.mStartOffset;
} else {
range.mEndOffset = range.mStartOffset + uniStrLen;
g_free(uniStr);
uniStr = nullptr;
}
aTextRangeList.AppendElement(range);
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" mStartOffset=%u, mEndOffset=%u, mRangeType=%s",
range.mStartOffset, range.mEndOffset,
GetRangeTypeName(range.mRangeType)));
} while (pango_attr_iterator_next(iter));
nsTextRange range;
if (cursor_pos < 0) {
range.mStartOffset = 0;
} else if (uint32_t(cursor_pos) > mDispatchedCompositionString.Length()) {
range.mStartOffset = mDispatchedCompositionString.Length();
} else {
range.mStartOffset = uint32_t(cursor_pos);
}
range.mEndOffset = range.mStartOffset;
range.mRangeType = NS_TEXTRANGE_CARETPOSITION;
aTextRangeList.AppendElement(range);
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" mStartOffset=%u, mEndOffset=%u, mRangeType=%s",
range.mStartOffset, range.mEndOffset,
GetRangeTypeName(range.mRangeType)));
pango_attr_iterator_destroy(iter);
pango_attr_list_unref(feedback_list);
g_free(preedit_string);
}
void
nsGtkIMModule::SetCursorPosition(uint32_t aTargetOffset)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): SetCursorPosition, aTargetOffset=%u",
this, aTargetOffset));
if (aTargetOffset == UINT32_MAX) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, aTargetOffset is wrong offset"));
return;
}
if (!mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no focused window"));
return;
}
GtkIMContext *im = GetContext();
if (!im) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no context"));
return;
}
nsQueryContentEvent charRect(true, NS_QUERY_TEXT_RECT,
mLastFocusedWindow);
charRect.InitForQueryTextRect(aTargetOffset, 1);
InitEvent(charRect);
nsEventStatus status;
mLastFocusedWindow->DispatchEvent(&charRect, status);
if (!charRect.mSucceeded) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, NS_QUERY_TEXT_RECT was failed"));
return;
}
nsWindow* rootWindow =
static_cast<nsWindow*>(mLastFocusedWindow->GetTopLevelWidget());
// Get the position of the rootWindow in screen.
gint rootX, rootY;
gdk_window_get_origin(rootWindow->GetGdkWindow(), &rootX, &rootY);
// Get the position of IM context owner window in screen.
gint ownerX, ownerY;
gdk_window_get_origin(mOwnerWindow->GetGdkWindow(), &ownerX, &ownerY);
// Compute the caret position in the IM owner window.
GdkRectangle area;
area.x = charRect.mReply.mRect.x + rootX - ownerX;
area.y = charRect.mReply.mRect.y + rootY - ownerY;
area.width = 0;
area.height = charRect.mReply.mRect.height;
gtk_im_context_set_cursor_location(im, &area);
}
nsresult
nsGtkIMModule::GetCurrentParagraph(nsAString& aText, uint32_t& aCursorPos)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): GetCurrentParagraph, mCompositionState=%s",
this, GetCompositionStateName()));
if (!mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no focused window in this module"));
return NS_ERROR_NULL_POINTER;
}
nsEventStatus status;
uint32_t selOffset = mCompositionStart;
uint32_t selLength = mSelectedString.Length();
// If focused editor doesn't have composition string, we should use
// current selection.
if (!EditorHasCompositionString()) {
// Query cursor position & selection
nsQueryContentEvent querySelectedTextEvent(true,
NS_QUERY_SELECTED_TEXT,
mLastFocusedWindow);
mLastFocusedWindow->DispatchEvent(&querySelectedTextEvent, status);
NS_ENSURE_TRUE(querySelectedTextEvent.mSucceeded, NS_ERROR_FAILURE);
selOffset = querySelectedTextEvent.mReply.mOffset;
selLength = querySelectedTextEvent.mReply.mString.Length();
}
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" selOffset=%u, selLength=%u",
selOffset, selLength));
// XXX nsString::Find and nsString::RFind take int32_t for offset, so,
// we cannot support this request when the current offset is larger
// than INT32_MAX.
if (selOffset > INT32_MAX || selLength > INT32_MAX ||
selOffset + selLength > INT32_MAX) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, The selection is out of range"));
return NS_ERROR_FAILURE;
}
// Get all text contents of the focused editor
nsQueryContentEvent queryTextContentEvent(true,
NS_QUERY_TEXT_CONTENT,
mLastFocusedWindow);
queryTextContentEvent.InitForQueryTextContent(0, UINT32_MAX);
mLastFocusedWindow->DispatchEvent(&queryTextContentEvent, status);
NS_ENSURE_TRUE(queryTextContentEvent.mSucceeded, NS_ERROR_FAILURE);
nsAutoString textContent(queryTextContentEvent.mReply.mString);
if (selOffset + selLength > textContent.Length()) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, The selection is invalid, textContent.Length()=%u",
textContent.Length()));
return NS_ERROR_FAILURE;
}
// Remove composing string and restore the selected string because
// GtkEntry doesn't remove selected string until committing, however,
// our editor does it. We should emulate the behavior for IME.
if (EditorHasCompositionString() &&
mDispatchedCompositionString != mSelectedString) {
textContent.Replace(mCompositionStart,
mDispatchedCompositionString.Length(), mSelectedString);
}
// Get only the focused paragraph, by looking for newlines
int32_t parStart = (selOffset == 0) ? 0 :
textContent.RFind("\n", false, selOffset - 1, -1) + 1;
int32_t parEnd = textContent.Find("\n", false, selOffset + selLength, -1);
if (parEnd < 0) {
parEnd = textContent.Length();
}
aText = nsDependentSubstring(textContent, parStart, parEnd - parStart);
aCursorPos = selOffset - uint32_t(parStart);
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" aText=%s, aText.Length()=%u, aCursorPos=%u",
NS_ConvertUTF16toUTF8(aText).get(),
aText.Length(), aCursorPos));
return NS_OK;
}
nsresult
nsGtkIMModule::DeleteText(const int32_t aOffset, const uint32_t aNChars)
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): DeleteText, aOffset=%d, aNChars=%d, "
"mCompositionState=%s",
this, aOffset, aNChars, GetCompositionStateName()));
if (!mLastFocusedWindow) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there are no focused window in this module"));
return NS_ERROR_NULL_POINTER;
}
if (!aNChars) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, aNChars must not be zero"));
return NS_ERROR_INVALID_ARG;
}
nsRefPtr<nsWindow> lastFocusedWindow(mLastFocusedWindow);
nsEventStatus status;
// First, we should cancel current composition because editor cannot
// handle changing selection and deleting text.
uint32_t selOffset;
bool wasComposing = IsComposing();
bool editorHadCompositionString = EditorHasCompositionString();
if (wasComposing) {
selOffset = mCompositionStart;
if (editorHadCompositionString &&
!DispatchTextEvent(mSelectedString, false)) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, quitting from DeletText"));
return NS_ERROR_FAILURE;
}
if (!DispatchCompositionEnd()) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, quitting from DeletText"));
return NS_ERROR_FAILURE;
}
} else {
// Query cursor position & selection
nsQueryContentEvent querySelectedTextEvent(true,
NS_QUERY_SELECTED_TEXT,
mLastFocusedWindow);
lastFocusedWindow->DispatchEvent(&querySelectedTextEvent, status);
NS_ENSURE_TRUE(querySelectedTextEvent.mSucceeded, NS_ERROR_FAILURE);
selOffset = querySelectedTextEvent.mReply.mOffset;
}
// Get all text contents of the focused editor
nsQueryContentEvent queryTextContentEvent(true,
NS_QUERY_TEXT_CONTENT,
mLastFocusedWindow);
queryTextContentEvent.InitForQueryTextContent(0, UINT32_MAX);
mLastFocusedWindow->DispatchEvent(&queryTextContentEvent, status);
NS_ENSURE_TRUE(queryTextContentEvent.mSucceeded, NS_ERROR_FAILURE);
if (queryTextContentEvent.mReply.mString.IsEmpty()) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, there is no contents"));
return NS_ERROR_FAILURE;
}
NS_ConvertUTF16toUTF8 utf8Str(
nsDependentSubstring(queryTextContentEvent.mReply.mString,
0, selOffset));
glong offsetInUTF8Characters =
g_utf8_strlen(utf8Str.get(), utf8Str.Length()) + aOffset;
if (offsetInUTF8Characters < 0) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, aOffset is too small for current cursor pos "
"(computed offset: %d)",
offsetInUTF8Characters));
return NS_ERROR_FAILURE;
}
AppendUTF16toUTF8(
nsDependentSubstring(queryTextContentEvent.mReply.mString, selOffset),
utf8Str);
glong countOfCharactersInUTF8 =
g_utf8_strlen(utf8Str.get(), utf8Str.Length());
glong endInUTF8Characters =
offsetInUTF8Characters + aNChars;
if (countOfCharactersInUTF8 < endInUTF8Characters) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, aNChars is too large for current contents "
"(content length: %d, computed end offset: %d)",
countOfCharactersInUTF8, endInUTF8Characters));
return NS_ERROR_FAILURE;
}
gchar* charAtOffset =
g_utf8_offset_to_pointer(utf8Str.get(), offsetInUTF8Characters);
gchar* charAtEnd =
g_utf8_offset_to_pointer(utf8Str.get(), endInUTF8Characters);
// Set selection to delete
nsSelectionEvent selectionEvent(true, NS_SELECTION_SET,
mLastFocusedWindow);
nsDependentCSubstring utf8StrBeforeOffset(utf8Str, 0,
charAtOffset - utf8Str.get());
selectionEvent.mOffset =
NS_ConvertUTF8toUTF16(utf8StrBeforeOffset).Length();
nsDependentCSubstring utf8DeletingStr(utf8Str,
utf8StrBeforeOffset.Length(),
charAtEnd - charAtOffset);
selectionEvent.mLength =
NS_ConvertUTF8toUTF16(utf8DeletingStr).Length();
selectionEvent.mReversed = false;
selectionEvent.mExpandToClusterBoundary = false;
lastFocusedWindow->DispatchEvent(&selectionEvent, status);
if (!selectionEvent.mSucceeded ||
lastFocusedWindow != mLastFocusedWindow ||
lastFocusedWindow->Destroyed()) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, setting selection caused focus change "
"or window destroyed"));
return NS_ERROR_FAILURE;
}
// Delete the selection
nsContentCommandEvent contentCommandEvent(true,
NS_CONTENT_COMMAND_DELETE,
mLastFocusedWindow);
mLastFocusedWindow->DispatchEvent(&contentCommandEvent, status);
if (!contentCommandEvent.mSucceeded ||
lastFocusedWindow != mLastFocusedWindow ||
lastFocusedWindow->Destroyed()) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, deleting the selection caused focus change "
"or window destroyed"));
return NS_ERROR_FAILURE;
}
if (!wasComposing) {
return NS_OK;
}
// Restore the composition at new caret position.
if (!DispatchCompositionStart()) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, resterting composition start"));
return NS_ERROR_FAILURE;
}
if (!editorHadCompositionString) {
return NS_OK;
}
nsAutoString compositionString;
GetCompositionString(compositionString);
if (!DispatchTextEvent(compositionString, true)) {
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
(" FAILED, restoring composition string"));
return NS_ERROR_FAILURE;
}
return NS_OK;
}
void
nsGtkIMModule::InitEvent(nsGUIEvent &aEvent)
{
aEvent.time = PR_Now() / 1000;
}
bool
nsGtkIMModule::ShouldIgnoreNativeCompositionEvent()
{
PR_LOG(gGtkIMLog, PR_LOG_ALWAYS,
("GtkIMModule(%p): ShouldIgnoreNativeCompositionEvent, mLastFocusedWindow=%p, mIgnoreNativeCompositionEvent=%s",
this, mLastFocusedWindow,
mIgnoreNativeCompositionEvent ? "YES" : "NO"));
if (!mLastFocusedWindow) {
return true; // cannot continue
}
return mIgnoreNativeCompositionEvent;
}
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