191 lines
6.6 KiB
Java
191 lines
6.6 KiB
Java
/*
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* Copyright (c) 2003,2009 Declarative Engineering LLC.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Declarative Engineering LLC
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* verson 1 which accompanies this distribution, and is available at
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* http://declarativeengineering.com/legal/DE_Developer_License_v1.txt
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*/
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package com.foundation.view.swt;
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import com.foundation.view.*;
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import com.foundation.view.resource.ResourceReference;
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import org.eclipse.swt.SWT;
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public class Label extends Component {
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public static final int STYLE_SEPARATOR = SWT.SEPARATOR;
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public static final int STYLE_HORIZONTAL = SWT.HORIZONTAL;
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public static final int STYLE_VERTICAL = SWT.VERTICAL;
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public static final int STYLE_SHADOW_IN = SWT.SHADOW_IN;
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public static final int STYLE_SHADOW_OUT = SWT.SHADOW_OUT;
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public static final int STYLE_SHADOW_NONE = SWT.SHADOW_NONE;
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public static final int STYLE_LEFT = SWT.LEFT;
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public static final int STYLE_RIGHT = SWT.RIGHT;
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public static final int STYLE_CENTER = SWT.CENTER;
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public static final int STYLE_WRAP = SWT.WRAP;
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/** The label text. */
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private SingleResourceAssociation text = new SingleResourceAssociation(this, this, getViewContext(), SingleResourceAssociation.TYPE_TEXT, false, "");
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/** The label image. */
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private SingleResourceAssociation image = new SingleResourceAssociation(this, this, getViewContext(), SingleResourceAssociation.TYPE_IMAGE, false, null);
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/** A holder for the value of the text. */
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private ResourceHolder textHolder = new ResourceHolder(this);
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/** A holder for the value of the image. */
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private ResourceHolder imageHolder = new ResourceHolder(this);
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/**
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* Label constructor.
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* @param parent A composite control which will be the parent of the new instance (cannot be null).
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* @param name The unique component name.
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* @param style The style of control to construct
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* @see #SEPARATOR
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* @see #HORIZONTAL
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* @see #VERTICAL
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* @see #SHADOW_IN
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* @see #SHADOW_OUT
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* @see #SHADOW_NONE
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* @see #LEFT
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* @see #RIGHT
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* @see #CENTER
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* @see #WRAP
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*/
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public Label(Container parent, String name, int style) {
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super(parent, name, style);
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}//Label()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.AbstractComponent#initializeControl(int)
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*/
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protected void initializeControl(int style, Object data) {
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setSwtWidget(new org.eclipse.swt.widgets.Label(((Container) getContainer()).getSwtParent(), style));
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getSwtWidget().setData(this);
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}//initializeControl()//
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/**
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* Gets the SWT label that represents this label.
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* @return The SWT label providing visualization for this label.
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*/
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public org.eclipse.swt.widgets.Label getSwtLabel() {
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return (org.eclipse.swt.widgets.Label) getSwtControl();
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}//getSwtLabel()//
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/**
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* Sets the label's text. This will be the default text if there is a text attribute associated with this component.
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* @param text The text that will appear in the label.
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*/
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public void setText(String text) {
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verifyThread();
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this.text.setDefaultValue(text);
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}//setText()//
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/**
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* Sets the component's default text resource.
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* @param text The text to be displayed by this component.
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*/
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public void setText(ResourceReference text) {
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verifyThread();
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this.text.setDefaultValue(text);
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}//setText()//
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/**
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* Sets the association container used to access the text.
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* @param container The text association metadata.
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*/
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public void setTextAssociation(SingleAssociationContainer container) {
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verifyThread();
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this.text.setAssociations(container);
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}//setTextAssociation()//
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/**
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* Sets the association container used to access the image.
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* @param container The image association metadata.
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*/
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public void setImageAssociation(SingleAssociationContainer container) {
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verifyThread();
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this.image.setAssociations(container);
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}//setImageAssociation()//
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/**
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* Sets the label's image. This will be the default image if there is a image attribute associated with this component.
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* @param image The image to be displayed by the label.
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*/
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public void setImage(JefImage image) {
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verifyThread();
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this.image.setDefaultValue(image);
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}//setImage()//
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/**
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* Sets the component's default image resource.
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* @param image The image to be displayed by this component.
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*/
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public void setImage(ResourceReference image) {
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verifyThread();
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this.image.setDefaultValue(image);
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}//setImage()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.AbstractComponent#internalViewInitialize()
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*/
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protected void internalViewInitialize() {
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text.initialize(true);
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image.initialize(true);
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super.internalViewInitialize();
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}//internalViewInitialize()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.AbstractComponent#internalViewRelease()
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*/
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protected void internalViewRelease() {
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destroyImage((JefImage) imageHolder.getValue());
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text.release();
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image.release();
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textHolder.release();
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imageHolder.release();
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super.internalViewRelease();
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}//internalViewRelease()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.AbstractComponent#internalViewRefresh()
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*/
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protected void internalViewRefresh() {
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super.internalViewRefresh();
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internalViewRefreshText();
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internalViewRefreshImage();
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}//internalViewRefresh()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.Component#internalResourceHolderChanged(com.foundation.view.swt.ResourceHolder, java.lang.Object, java.lang.Object)
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*/
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protected void internalResourceHolderChanged(ResourceHolder resource, Object oldValue, Object newValue, int flags) {
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if(resource == textHolder) {
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String value = newValue != null ? (String) newValue : "";
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getSwtLabel().setText(value == null ? "" : value);
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resize();
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}//if//
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else if(resource == imageHolder) {
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destroyImage(getSwtLabel().getImage());
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getSwtLabel().setImage(createImage((JefImage) newValue));
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resize();
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}//else if//
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else {
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super.internalResourceHolderChanged(resource, oldValue, newValue, flags);
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}//else//
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}//internalOnAssociationChanged()//
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/**
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* Refreshes the component's text.
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*/
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protected void internalViewRefreshText() {
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if(text.refresh()) {
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textHolder.setValue(text.getValue());
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}//if//
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}//internalViewRefreshText()//
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/**
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* Refreshes the component's image.
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*/
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protected void internalViewRefreshImage() {
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if(image.refresh()) {
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imageHolder.setValue(image.getValue());
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}//if//
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}//internalViewRefreshImage()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.AbstractComponent#internalOnValueChanged(com.foundation.view.SingleResourceAssociation)
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*/
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protected void internalOnValueChanged(SingleResourceAssociation resourceAssociation, int flags) {
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if(resourceAssociation == text) {
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internalViewRefreshText();
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}//if//
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else if(resourceAssociation == image) {
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internalViewRefreshImage();
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}//else if//
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else {
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super.internalOnValueChanged(resourceAssociation, flags);
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}//else//
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}//internalOnValueChanged()//
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}//Label// |