/*
*
*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program 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.
*
* This program 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 at /legal/license.txt).
*
* 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 Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package javax.microedition.lcdui;
/**
* Look and feel implementation for <code>StringItem</code> using
* platform widget.
*/
class StringItemLFImpl extends ItemLFImpl implements StringItemLF {
/**
* Creates a look&feel for a <code>StringItem</code>.
*
* @param strItem The <code>StringItem</code> associated with this
* look&feel
*/
StringItemLFImpl(StringItem strItem) {
super(strItem);
this.strItem = strItem;
// when no commands are added, the actual appearance
// is PLAIN; the actual appearance will be the same
// as appearance set in StringItem if a command is added
// to this StringItem
appearanceMode = Item.PLAIN;
}
// *****************************************************
// Public methods (StringItemLF interface impl)
// *****************************************************
/**
* Notifies L&F of a string change in the corresponding
* <code>StringItem</code>.
*
* @param str the new string set in the <code>StringItem</code>
*/
public void lSetText(String str) {
// Only update native resource if it exists.
if (nativeId != DisplayableLFImpl.INVALID_NATIVE_ID) {
setContent0(nativeId, str, appearanceMode);
}
lRequestInvalidate(true, true);
}
/**
* Notifies L&F of a font change in the corresponding
* <code>StringItem</code>.
*
* @param font the new font set in the <code>StringItem</code>
*/
public void lSetFont(Font font) {
// Only update native resource if it exists.
if (nativeId != DisplayableLFImpl.INVALID_NATIVE_ID) {
setFont0(nativeId,
font.getFace(), font.getStyle(), font.getSize());
}
lRequestInvalidate(true, true);
}
/**
* Gets default font to render text in StringItem if it was not
* set by the application.
* @return - the font to render text if it was not set by the app
*/
public Font getDefaultFont() {
return Theme.curContentFont;
}
/**
* Notifies L&F of a command addition in the corresponding
* <code>StringItem</code>.
*
* @param cmd the newly added command
* @param i the index of the added command in the <code>StringItem</code>'s
* commands[] array
*/
public void lAddCommand(Command cmd, int i) {
super.lAddCommand(cmd, i);
if ((strItem.numCommands >= 1) && (appearanceMode == Item.PLAIN)) {
appearanceMode = strItem.appearanceMode == Item.BUTTON ?
Item.BUTTON : Item.HYPERLINK;
if (nativeId != DisplayableLFImpl.INVALID_NATIVE_ID) {
setContent0(nativeId, strItem.str, appearanceMode);
}
lRequestInvalidate(true, true);
}
}
/**
* Notifies L&F of a command removal in the corresponding
* <code>StringItem</code>.
*
* @param cmd the newly removed command
* @param i the index of the removed command in the
* <code>StringItem</code>'s commands[] array
*/
public void lRemoveCommand(Command cmd, int i) {
super.lRemoveCommand(cmd, i);
// restore the value of the original appearanceMode
if (strItem.numCommands < 1) {
appearanceMode = Item.PLAIN;
if (nativeId != DisplayableLFImpl.INVALID_NATIVE_ID) {
setContent0(nativeId, strItem.str, appearanceMode);
}
lRequestInvalidate(true, true);
}
}
// *****************************************************
// Package private methods
// *****************************************************
/**
* Determine if this <code>Item</code> should have a newline before it.
*
* @return <code>true</code> if it should have a newline before
*/
boolean equateNLB() {
String label = strItem.label;
String str = strItem.str;
// If label starts with a \n, put this StringItem on a newline
if (label != null && label.length() > 0) {
if (label.charAt(0) == '\n') {
return true;
}
} else if (str != null && str.length() > 0) {
// If there is no label and our content starts with a \n,
// this StringItem starts on a newline
if (str.charAt(0) == '\n') {
return true;
}
} else {
// empty StringItem
return false;
}
if ((strItem.layout & Item.LAYOUT_2) == Item.LAYOUT_2) {
return ((strItem.layout & Item.LAYOUT_NEWLINE_BEFORE)
== Item.LAYOUT_NEWLINE_BEFORE);
}
// LAYOUT_2 was not set, hence we need to provide backward
// compatibility with MIDP1.0 where any StringItem with a
// non-null label would go on a new line.
return label != null && label.length() > 0;
}
/**
* Determine if this <code>Item</code> should have a newline after it.
*
* @return <code>true</code> if it should have a newline after
*/
boolean equateNLA() {
String label = item.label;
String str = strItem.str;
// If content ends with a \n, there is a newline after
// this StringItem
if (str != null && str.length() > 0) {
if (str.charAt(str.length() - 1) == '\n') {
return true;
}
} else if (label != null && label.length() > 0) {
// If there is no content and our label ends with a \n,
// there is a newline after this StringItem
if (label.charAt(label.length() - 1) == '\n') {
return true;
}
} else {
// empty StringItem
return false;
}
if ((strItem.layout & Item.LAYOUT_2) == Item.LAYOUT_2) {
return ((item.layout & Item.LAYOUT_NEWLINE_AFTER)
== Item.LAYOUT_NEWLINE_AFTER);
}
return false;
}
/**
* Called by event delivery to notify an <code>ItemLF</code> in current
* <code>FormLF</code> of a change in its peer state.
* Handle special gesture of default command.
*
* @param hint <code>-1</code> signals that user performed the
* special gesture of default command
*
* @return always <code>false</code> so <code>ItemStateListener</code>
* will not be notified
*/
boolean uCallPeerStateChanged(int hint) {
// activate default command if hint is -1
if (hint == -1) {
Command defaultCommand;
ItemCommandListener commandListener;
synchronized (Display.LCDUILock) {
defaultCommand = strItem.defaultCommand;
commandListener = strItem.commandListener;
}
if (defaultCommand != null && commandListener != null) {
// Protect from any unexpected application exceptions
try {
synchronized (Display.calloutLock) {
commandListener.commandAction(defaultCommand, strItem);
}
} catch (Throwable thr) {
Display.handleThrowable(thr);
}
}
}
// Indicate to Form to not notify ItemStateListener
return false;
}
/**
* Create native resource for current <code>StringItem</code>.
* Override function in <code>ItemLFImpl</code>.
*
* @param ownerId Owner screen's native resource id
*/
void createNativeResource(int ownerId) {
nativeId = createNativeResource0(ownerId,
strItem.label, strItem.layout,
strItem.str,
appearanceMode, strItem.font);
}
/**
* KNI function that create native resource for current
* <code>StringItem</code>.
*
* @param ownerId Owner screen's native resource id
* (<code>MidpDisplayable *</code>)
* @param label label to be used for this <code>Item</code>
* @param layout layout directive associated with this <code>Item</code>
* @param text text to be used for this <code>StringItem</code>
* @param appearanceMode should be <code>PLAIN</code>,
* <code>HYPERLINK</code> or <code>BUTTON</code>
* @param font font face to be used for rendering <code>StringItem</code>
* content
*
* @return native resource id (<code>MidpItem *</code>) of this
* <code>StringItem</code>
*/
private native int createNativeResource0(int ownerId,
String label,
int layout,
String text,
int appearanceMode,
Font font);
/**
* KNI function that sets text on the native resource corresponding
* to the current <code>StringItem</code>.
*
* @param nativeId native resource id for this item
* @param text new text set on the current <code>StringItem</code>
* @param appearanceMode the appearance mode of the text passed in
*/
private native void setContent0(int nativeId, String text,
int appearanceMode);
/**
* KNI function that sets font on the native resource corresponding
* to the current <code>StringItem</code>.
*
* @param nativeId native resource id for this item
* @param face face of the new font
* @param style style of the new font
* @param size size of the new font
*/
private native void setFont0(int nativeId, int face, int style, int size);
/**
* The <code>StringItem</code> associated with this view.
*/
private StringItem strItem;
/**
* The appearance mode.
* The actual appearance of a <code>StringItem</code> could be different to
* the one set in <code>StringItem</code>. A <code>StringItem</code>
* created with <code>PLAIN</code> appearance will look like a
* <code>HYPERLINK</code> if commands were added.
*/
private int appearanceMode;
}
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