org.havi.ui.event.HTextEvent Maven / Gradle / Ivy
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package org.havi.ui.event;
/*
* Copyright 2000-2003 by HAVi, Inc. Java is a trademark of Sun
* Microsystems, Inc. All rights reserved.
*/
import org.havi.ui.HTextValue;
/**
An {@link org.havi.ui.event.HTextEvent HTextEvent} event is used to
interact with a component implementing the {@link
org.havi.ui.HKeyboardInputPreferred HKeyboardInputPreferred}
interface as follows:
- An {@link org.havi.ui.event.HTextEvent HTextEvent} event may be sent
from the HAVi system to the component to cause a change to the
caret position or editable mode of the component as a result of
user interaction. For example, a platform which lacks suitable
caret positioning or mode switching keys may choose to generate
this using a virtual keyboard user interface.
- An {@link org.havi.ui.event.HTextEvent HTextEvent} event is sent
from the component to all registered {@link
org.havi.ui.event.HTextListener HTextListeners} when a change to
the text content, caret position or editable mode of the component
occurs.
All interoperable HAVi components which expect to receive {@link
org.havi.ui.event.HTextEvent HTextEvent} events should implement the
{@link org.havi.ui.HKeyboardInputPreferred
HKeyboardInputPreferred} interface.
The parameters to the constructors are as follows, in cases where
parameters are not used, then the constructor should use the default
values.
Default parameter values exposed in the constructors
Parameter Description Default value
Set method Get method None.
Default parameter values not exposed in the constructors
Description Default value Set method
Get method None.
*/
public class HTextEvent
extends java.awt.AWTEvent
{
/**
* The first integer id in the range of event ids supported by
* the {@link org.havi.ui.event.HTextEvent
* HTextEvent} class.
*/
public static final int TEXT_FIRST = HItemEvent.ITEM_LAST + 1;
/**
* The last integer id in the range of event ids supported by
* the {@link org.havi.ui.event.HTextEvent
* HTextEvent} class.
*/
public static final int TEXT_LAST = TEXT_FIRST + 9;
/**
* A text event with this id indicates that the textual content of
* an {@link org.havi.ui.HTextValue HTextValue} component may be
* about to change. This event is sent to or from the component
* when the user causes the
* component to enter its editable mode. Note that it is a
* platform specific implementation option for such components to
* enter editable mode automatically e.g. when they receive input
* focus. In such a case the order in which the {@link
* org.havi.ui.event.HFocusEvent HFocusEvent} and {@link
* org.havi.ui.event.HTextEvent HTextEvent} are sent is platform
* specific.
*
* @see HTextValue#getEditMode
*/
public static final int TEXT_START_CHANGE = TEXT_FIRST;
/**
* A text event with this id is sent from the component whenever the
* textual content of an {@link org.havi.ui.HTextValue
* HTextValue} component is changed.
*/
public static final int TEXT_CHANGE = TEXT_FIRST + 1;
/**
* A text event with this id is sent from the component whenever the
* caret position of an {@link org.havi.ui.HTextValue
* HTextValue} component is changed. This event will be sent only if the
* caret position changed in a manner not notified by the
{@link org.havi.ui.event.HTextEvent#CARET_NEXT_CHAR
* CARET_NEXT_CHAR}, {@link org.havi.ui.event.HTextEvent#CARET_NEXT_LINE
* CARET_NEXT_LINE}, {@link org.havi.ui.event.HTextEvent#CARET_PREV_CHAR
* CARET_PREV_CHAR}, {@link org.havi.ui.event.HTextEvent#CARET_PREV_LINE
* CARET_PREV_LINE}, {@link org.havi.ui.event.HTextEvent#CARET_NEXT_PAGE
* CARET_NEXT_PAGE}, or {@link org.havi.ui.event.HTextEvent#CARET_PREV_PAGE
* CARET_PREV_PAGE} events.
*/
public static final int TEXT_CARET_CHANGE = TEXT_FIRST + 2;
/**
* A text event with this id indicates that the textual content of
* an {@link org.havi.ui.HTextValue HTextValue} component has been
* finally set. This event is sent to or from the component when the user causes the
* component to leave its editable mode. Note that it is a
* platform specific implementation option for such components to
* leave editable mode automatically e.g. when they lose input
* focus. In such a case the order in which the {@link
* org.havi.ui.event.HFocusEvent HFocusEvent} and {@link
* org.havi.ui.event.HTextEvent HTextEvent} are sent is platform
* specific.
*
* @see HTextValue#getEditMode
*/
public static final int TEXT_END_CHANGE = TEXT_FIRST + 3;
/**
* When a text event with this id is sent to a
* {@link org.havi.ui.HTextValue HTextValue} component, then its
* caret position should move one character forward. If such
* an event is sent from a component to {@link HTextListener
* HTextListeners}, then it was moved.
*/
public static final int CARET_NEXT_CHAR = TEXT_FIRST + 4;
/**
* When a text event with this id is sent to a
* {@link org.havi.ui.HTextValue HTextValue} component, then its
* caret position should move down one line. If such
* an event is sent from a component to {@link HTextListener
* HTextListeners}, then it was moved. It is widget specific, if
* the caret remains at the same column or at an approximate
* horizontal pixel position for non-fixed-width fonts.
*/
public static final int CARET_NEXT_LINE = TEXT_FIRST + 5;
/**
* When a text event with this id is sent to a
* {@link org.havi.ui.HTextValue HTextValue} component, then its
* caret position should move one character backward. If such
* an event is sent from a component to {@link HTextListener
* HTextListeners}, then it was moved.
*/
public static final int CARET_PREV_CHAR = TEXT_FIRST + 6;
/**
* When a text event with this id is sent to a
* {@link org.havi.ui.HTextValue HTextValue} component, then its
* caret position should move up one line. If such
* an event is sent from a component to {@link HTextListener
* HTextListeners}, then it was moved. It is widget specific, if
* the caret remains at the same column or at an approximate
* horizontal pixel position for non-fixed-width fonts.
*/
public static final int CARET_PREV_LINE = TEXT_FIRST + 7;
/**
* When a text event with this id is sent to a
* {@link org.havi.ui.HTextValue HTextValue} component, then its
* caret position should move down to the last possible line in
* the visible window. If the caret position is already on the
* last visible line then the caret should move down so that the
* last visible line scrolls up to the top of the visible window. If
* such an event is sent from a component to {@link HTextListener
* HTextListeners}, then it was moved. It is widget specific, if
* the caret remains at the same column or at an approximate
* horizontal pixel position for non-fixed-width fonts.
*/
public static final int CARET_NEXT_PAGE = TEXT_FIRST + 8;
/**
* When a text event with this id is sent to a
* {@link org.havi.ui.HTextValue HTextValue} component, then its
* caret position should move up to the first possible line in
* the visible window. If the caret position is already on the
* first visible line then the caret should move down so that the
* first visible line scrolls down to the bottom of the visible
* window. If such an event is sent from a component to
* {@link HTextListener HTextListeners}, then it was moved. It is
* widget specific, if the caret remains at the same column or at
* an approximate horizontal pixel position for non-fixed-width
* fonts.
*/
public static final int CARET_PREV_PAGE = TEXT_FIRST + 9;
/**
* Constructs an {@link org.havi.ui.event.HTextEvent
* HTextEvent}.
*
* @param source The {@link org.havi.ui.HKeyboardInputPreferred
* HKeyboardInputPreferred} component whose value has been modified.
* @param id The event id of the {@link
* org.havi.ui.event.HTextEvent HTextEvent} generated
* by the
* {@link org.havi.ui.HKeyboardInputPreferred HKeyboardInputPreferred}
* component. This is the value that will be returned by the
* event object's getID method.
*/
public HTextEvent(org.havi.ui.HKeyboardInputPreferred source, int id)
{
super(source, id);
}
}