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Unified Diff: content/browser/renderer_host/gtk_im_context_wrapper.h

Issue 231733005: Delete the GTK+ port of Chrome. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Remerge to ToT Created 6 years, 8 months ago
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Index: content/browser/renderer_host/gtk_im_context_wrapper.h
diff --git a/content/browser/renderer_host/gtk_im_context_wrapper.h b/content/browser/renderer_host/gtk_im_context_wrapper.h
deleted file mode 100644
index 8bd027f0e897f0f59a2cca0190f1931771e4f917..0000000000000000000000000000000000000000
--- a/content/browser/renderer_host/gtk_im_context_wrapper.h
+++ /dev/null
@@ -1,201 +0,0 @@
-// 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.
-
-#ifndef CONTENT_BROWSER_RENDERER_HOST_GTK_IM_CONTEXT_WRAPPER_H_
-#define CONTENT_BROWSER_RENDERER_HOST_GTK_IM_CONTEXT_WRAPPER_H_
-
-#include <gdk/gdk.h>
-#include <pango/pango-attributes.h>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/gtest_prod_util.h"
-#include "base/strings/string16.h"
-#include "third_party/WebKit/public/web/WebInputEvent.h"
-#include "ui/base/ime/composition_text.h"
-#include "ui/base/ime/text_input_type.h"
-
-typedef struct _GtkIMContext GtkIMContext;
-typedef struct _GtkWidget GtkWidget;
-
-namespace gfx {
-class Rect;
-}
-
-namespace content {
-class RenderWidgetHostViewGtk;
-struct NativeWebKeyboardEvent;
-
-// This class is a convenience wrapper for GtkIMContext.
-// It creates and manages two GtkIMContext instances, one is GtkIMMulticontext,
-// for plain text input box, another is GtkIMContextSimple, for password input
-// box.
-//
-// This class is in charge of dispatching key events to these two GtkIMContext
-// instances and handling signals emitted by them. Key events then will be
-// forwarded to renderer along with input method results via corresponding host
-// view.
-//
-// This class is used solely by RenderWidgetHostViewGtk.
-class GtkIMContextWrapper {
- public:
- explicit GtkIMContextWrapper(RenderWidgetHostViewGtk* host_view);
- ~GtkIMContextWrapper();
-
- // Processes a gdk key event received by |host_view|.
- void ProcessKeyEvent(GdkEventKey* event);
-
- void UpdateInputMethodState(ui::TextInputType type,
- bool can_compose_inline);
- void UpdateCaretBounds(const gfx::Rect& caret_bounds);
- void OnFocusIn();
- void OnFocusOut();
- bool is_focused() const { return is_focused_; }
-
- GtkWidget* BuildInputMethodsGtkMenu();
-
- void CancelComposition();
-
- void ConfirmComposition();
-
- private:
- // Check if a text needs commit by forwarding a char event instead of
- // by confirming as a composition text.
- bool NeedCommitByForwardingCharEvent() const;
-
- // Check if the input method returned any result, eg. preedit and commit text.
- bool HasInputMethodResult() const;
-
- void ProcessFilteredKeyPressEvent(NativeWebKeyboardEvent* wke);
- void ProcessUnfilteredKeyPressEvent(NativeWebKeyboardEvent* wke);
-
- // Processes result returned from input method after filtering a key event.
- // |filtered| indicates if the key event was filtered by the input method.
- void ProcessInputMethodResult(const GdkEventKey* event, bool filtered);
-
- // Real code of "commit" signal handler.
- void HandleCommit(const base::string16& text);
-
- // Real code of "preedit-start" signal handler.
- void HandlePreeditStart();
-
- // Real code of "preedit-changed" signal handler.
- void HandlePreeditChanged(const gchar* text,
- PangoAttrList* attrs,
- int cursor_position);
-
- // Real code of "preedit-end" signal handler.
- void HandlePreeditEnd();
-
- // Real code of "retrieve-surrounding" signal handler.
- gboolean HandleRetrieveSurrounding(GtkIMContext* context);
-
- // Real code of "realize" signal handler, used for setting im context's client
- // window.
- void HandleHostViewRealize(GtkWidget* widget);
-
- // Real code of "unrealize" signal handler, used for unsetting im context's
- // client window.
- void HandleHostViewUnrealize();
-
- // Sends a fake composition key event with specified event type. A composition
- // key event is a key event with special key code 229.
- void SendFakeCompositionKeyEvent(blink::WebInputEvent::Type type);
-
- // Signal handlers of GtkIMContext object.
- static void HandleCommitThunk(GtkIMContext* context, gchar* text,
- GtkIMContextWrapper* self);
- static void HandlePreeditStartThunk(GtkIMContext* context,
- GtkIMContextWrapper* self);
- static void HandlePreeditChangedThunk(GtkIMContext* context,
- GtkIMContextWrapper* self);
- static void HandlePreeditEndThunk(GtkIMContext* context,
- GtkIMContextWrapper* self);
- static gboolean HandleRetrieveSurroundingThunk(GtkIMContext* context,
- GtkIMContextWrapper* self);
-
- // Signal handlers connecting to |host_view_|'s native view widget.
- static void HandleHostViewRealizeThunk(GtkWidget* widget,
- GtkIMContextWrapper* self);
- static void HandleHostViewUnrealizeThunk(GtkWidget* widget,
- GtkIMContextWrapper* self);
-
- // The parent object.
- RenderWidgetHostViewGtk* host_view_;
-
- // The GtkIMContext object.
- // In terms of the DOM event specification Appendix A
- // <http://www.w3.org/TR/DOM-Level-3-Events/keyset.html>,
- // GTK uses a GtkIMContext object for the following two purposes:
- // 1. Composing Latin characters (A.1.2), and;
- // 2. Composing CJK characters with an IME (A.1.3).
- // Many JavaScript pages assume composed Latin characters are dispatched to
- // their onkeypress() handlers but not dispatched CJK characters composed
- // with an IME. To emulate this behavior, we should monitor the status of
- // this GtkIMContext object and prevent sending Char events when a
- // GtkIMContext object sends a "commit" signal with the CJK characters
- // composed by an IME.
- GtkIMContext* context_;
-
- // A GtkIMContextSimple object, for supporting dead/compose keys when input
- // method is disabled, eg. in password input box.
- GtkIMContext* context_simple_;
-
- // Whether or not this widget is focused.
- bool is_focused_;
-
- // Whether or not the above GtkIMContext is composing a text with an IME.
- // This flag is used in "commit" signal handler of the GtkIMContext object,
- // which determines how to submit the result text to WebKit according to this
- // flag.
- // If this flag is true or there are more than one characters in the result,
- // then the result text will be committed to WebKit as a confirmed
- // composition. Otherwise, it'll be forwarded as a key event.
- //
- // The GtkIMContext object sends a "preedit_start" before it starts composing
- // a text and a "preedit_end" signal after it finishes composing it.
- // "preedit_start" signal is monitored to turn it on.
- // We don't monitor "preedit_end" signal to turn it off, because an input
- // method may fire "preedit_end" signal before "commit" signal.
- // A buggy input method may not fire "preedit_start" and/or "preedit_end"
- // at all, so this flag will also be set to true when "preedit_changed" signal
- // is fired with non-empty preedit text.
- bool is_composing_text_;
-
- // Whether or not the IME is enabled.
- bool is_enabled_;
-
- // Whether or not it's currently running inside key event handler.
- // If it's true, then preedit-changed and commit handler will backup the
- // preedit or commit text instead of sending them down to webkit.
- // key event handler will send them later.
- bool is_in_key_event_handler_;
-
- // The most recent composition text information retrieved from context_;
- ui::CompositionText composition_;
-
- // Whether or not the composition has been changed since last key event.
- bool is_composition_changed_;
-
- // Stores a copy of the most recent commit text received by commit signal
- // handler.
- base::string16 commit_text_;
-
- // If it's true then the next "commit" signal will be suppressed.
- // It's only used to workaround http://crbug.com/50485.
- // TODO(suzhe): Remove it after input methods get fixed.
- bool suppress_next_commit_;
-
- // Information of the last key event, for working around
- // http://crosbug.com/6582
- int last_key_code_;
- bool last_key_was_up_;
- bool last_key_filtered_no_result_;
-
- DISALLOW_COPY_AND_ASSIGN(GtkIMContextWrapper);
-};
-
-} // namespace content
-
-#endif // CONTENT_BROWSER_RENDERER_HOST_GTK_IM_CONTEXT_WRAPPER_H_

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