/*
* Copyright (c) 1998, 2003, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.awt.im.spi;
import java.awt.HeadlessException;
import java.awt.Window;
import java.awt.font.TextHitInfo;
import java.awt.im.InputMethodRequests;
import java.text.AttributedCharacterIterator;
import javax.swing.JFrame;
/**
* Provides methods that input methods
* can use to communicate with their client components or to request
* other services. This interface is implemented by the input method
* framework, and input methods call its methods on the instance they
* receive through
* {@link java.awt.im.spi.InputMethod#setInputMethodContext}.
* There should be no other implementors or callers.
*
* @since 1.3
*
* @author JavaSoft International
*/
public interface InputMethodContext extends InputMethodRequests {
/**
* Creates an input method event from the arguments given
* and dispatches it to the client component. For arguments,
* see {@link java.awt.event.InputMethodEvent#InputMethodEvent}.
*/
public void dispatchInputMethodEvent(int id,
AttributedCharacterIterator text, int committedCharacterCount,
TextHitInfo caret, TextHitInfo visiblePosition);
/**
* Creates a top-level window for use by the input method.
* The intended behavior of this window is:
* <ul>
* <li>it floats above all document windows and dialogs
* <li>it and all components that it contains do not receive the focus
* <li>it has lightweight decorations, such as a reduced drag region without title
* </ul>
* However, the actual behavior with respect to these three items is platform dependent.
* <p>
* The title may or may not be displayed, depending on the actual type of window created.
* <p>
* If attachToInputContext is true, the new window will share the input context that
* corresponds to this input method context, so that events for components in the window
* are automatically dispatched to the input method.
* Also, when the window is opened using setVisible(true), the input context will prevent
* deactivate and activate calls to the input method that might otherwise be caused.
* <p>
* Input methods must call {@link java.awt.Window#dispose() Window.dispose} on the
* returned input method window when it is no longer needed.
* <p>
* @param title the title to be displayed in the window's title bar,
* if there is such a title bar.
* A <code>null</code> value is treated as an empty string, "".
* @param attachToInputContext whether this window should share the input context
* that corresponds to this input method context
* @return a window with special characteristics for use by input methods
* @exception HeadlessException if <code>GraphicsEnvironment.isHeadless
* </code> returns <code>true</code>
*/
public Window createInputMethodWindow(String title, boolean attachToInputContext);
/**
* Creates a top-level Swing JFrame for use by the input method.
* The intended behavior of this window is:
* <ul>
* <li>it floats above all document windows and dialogs
* <li>it and all components that it contains do not receive the focus
* <li>it has lightweight decorations, such as a reduced drag region without title
* </ul>
* However, the actual behavior with respect to these three items is platform dependent.
* <p>
* The title may or may not be displayed, depending on the actual type of window created.
* <p>
* If attachToInputContext is true, the new window will share the input context that
* corresponds to this input method context, so that events for components in the window
* are automatically dispatched to the input method.
* Also, when the window is opened using setVisible(true), the input context will prevent
* deactivate and activate calls to the input method that might otherwise be caused.
* <p>
* Input methods must call {@link java.awt.Window#dispose() Window.dispose} on the
* returned input method window when it is no longer needed.
* <p>
* @param title the title to be displayed in the window's title bar,
* if there is such a title bar.
* A <code>null</code> value is treated as an empty string, "".
* @param attachToInputContext whether this window should share the input context
* that corresponds to this input method context
* @return a JFrame with special characteristics for use by input methods
* @exception HeadlessException if <code>GraphicsEnvironment.isHeadless
* </code> returns <code>true</code>
*
* @since 1.4
*/
public JFrame createInputMethodJFrame(String title, boolean attachToInputContext);
/**
* Enables or disables notification of the current client window's
* location and state for the specified input method. When
* notification is enabled, the input method's {@link
* java.awt.im.spi.InputMethod#notifyClientWindowChange
* notifyClientWindowChange} method is called as described in that
* method's specification. Notification is automatically disabled
* when the input method is disposed.
*
* @param inputMethod the input method for which notifications are
* enabled or disabled
* @param enable true to enable, false to disable
*/
public void enableClientWindowNotification(InputMethod inputMethod, boolean enable);
}