Initial commit from SVN.
This commit is contained in:
wcrisman
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/*
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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.tcv.swt.server;
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import com.common.comparison.Comparator;
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import com.foundation.view.*;
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import com.foundation.view.resource.ResourceReference;
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import com.foundation.tcv.model.LinkInfo;
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import com.foundation.tcv.swt.*;
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import com.foundation.tcv.view.*;
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public class Button extends Component implements IButton {
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/** Called when the button is pressed (only used for push buttons). */
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private IMethodAssociation selectionMethod = null;
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/** The button's selection state resource. */
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private SingleResourceAssociation selection = new SingleResourceAssociation(this, this, getViewContext(), SingleResourceAssociation.TYPE_OBJECT, true, Boolean.FALSE);
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/** The button's text resource. */
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private SingleResourceAssociation text = new SingleResourceAssociation(this, this, getViewContext(), SingleResourceAssociation.TYPE_TEXT, false, "");
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/** The button's image resource. */
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private SingleResourceAssociation image = new SingleResourceAssociation(this, this, getViewContext(), SingleResourceAssociation.TYPE_IMAGE, false, null);
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/** The optional object that represents a selection of this button. Used for radio buttons only - to allow them to work on the same attribute. Never used for the linkages. */
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private Object selectionData = null;
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/** Whether the button's selection state (for check boxes and the like) should be synchronized by the client when changed. */
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private boolean autoSynchronizeSelection = false;
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/** The delay to be used when auto synchronizing changes to the text. */
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private long autoSynchronizeSelectionDelay = 500;
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/** Whether the view should be disabled while a selection event is processed. */
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private boolean blockOnSelection = false;
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/** Whether this is a stateful button. */
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private final boolean isStateful;
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/** Whether this is a radio button. */
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private final boolean isRadio;
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/** Whether this is a push button. */
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private final boolean isPush;
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/** Whether the validation code in the view controller should be executed after synchronizing the state. */
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private boolean autoValidate = false;
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/**
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* Button 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 #STYLE_ARROW
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* @see #STYLE_CHECK
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* @see #STYLE_PUSH
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* @see #STYLE_RADIO
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* @see #STYLE_TOGGLE
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* @see #STYLE_FLAT
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* @see #STYLE_LEFT
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* @see #STYLE_RIGHT
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* @see #STYLE_CENTER
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* @see #STYLE_UP
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* @see #STYLE_DOWN
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*/
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public Button(IAbstractContainer parent, String name, int style) {
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super(parent, name, style);
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isRadio = (style & STYLE_RADIO) > 0;
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isStateful = isRadio || ((style & STYLE_TOGGLE) > 0) || ((style & STYLE_CHECK) > 0);
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isPush = !isStateful;
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//Initialize the client component.//
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sendMessage(MESSAGE_INITIALIZE, null, null, ((AbstractComponent) parent).getNumber(), style);
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//Don't set a delay for standard push buttons.//
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sendMessage(MESSAGE_SET_AUTO_SYNCHRONIZE_SELECTION_DELAY, new Long((((style & STYLE_CHECK) > 0) || ((style & STYLE_RADIO) > 0) || ((style & STYLE_TOGGLE) > 0)) ? 500 : 0));
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}//Button()//
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/**
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* Gets the optional selection data for the radio button (radio only).
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* @return The data to use to determine whether this button is selected (within the group of radio buttons) and to pass to the model when selected.
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*/
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public Object getSelectionData() {
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verifyThread();
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return selectionData;
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}//getSelectionData()//
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/**
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* Sets the optional selection data for the radio button (radio only).
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* @param selectionData The data to use to determine whether this button is selected (within the group of radio buttons) and to pass to the model when selected.
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*/
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public void setSelectionData(Object selectionData) {
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verifyThread();
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if(isRadio && !isInitialized()) {
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this.selectionData = selectionData;
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}//if//
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}//setSelectionData()//
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/**
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* Sets an 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 an 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 an association container used to access the selection.
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* @param container The selection association metadata.
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*/
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public void setSelectionAssociation(SingleAssociationContainer container) {
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verifyThread();
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this.selection.setAssociations(container);
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}//setSelectionAssociation()//
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/**
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* Adds a link for the selection.
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* @param link The local linkage for the selection.
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*/
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public void addSelectionLink(LinkData link) {
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sendMessage(MESSAGE_ADD_SELECTION_LINK, new LinkInfo(((AbstractComponent) link.getComponent()).getNumber(), link.getTarget(), link.getData(), link.isBoolean(), link.invertLogic(), link.nullValue()));
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}//addSelectionLink()//
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/**
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* Sets the component text.
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* @param text The text that will appear in the component.
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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 component image.
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* @param image The image to be displayed by the component.
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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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/**
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* Gets the component selection state.
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* @return Whether the component is in the selected state.
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*/
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public Boolean getIsSelected() {
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verifyThread();
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return (Boolean) selection.getValue();
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}//getIsSelected()//
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/**
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* Sets the component default selection state.
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* @param isSelected Whether the component is in the selected state.
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*/
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public void setIsSelected(Boolean isSelected) {
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verifyThread();
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if(isStateful) {
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selection.setDefaultValue(isSelected);
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}//if//
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}//setIsSelected()//
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/**
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* Sets the selection method called when the button is pressed (intended for push buttons).
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* @param selectionMethod The method called when the button is selected.
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*/
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public void setSelectionMethod(IMethodAssociation selectionMethod) {
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verifyThread();
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if(isPush) {
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this.selectionMethod = selectionMethod;
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sendMessage(MESSAGE_SET_BLOCK_ON_SELECTIONS, selectionMethod != null ? Boolean.TRUE : Boolean.FALSE);
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}//if//
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}//setSelectionMethod()//
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/**
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* Sets whether validate routine is called after a synchronize.
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* @param autoValidate Whether the validation code in the view controller will be called after synchronizing the state.
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*/
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public void setAutoValidate(boolean autoValidate) {
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this.autoValidate = autoValidate;
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}//setAutoValidate()//
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/**
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* Sets whether the control auto synchronizes the selected state of the button.
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* @param autoSynchronizeSelection Whether the button state is automatically synchronized.
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*/
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public void setAutoSynchronizeSelection(boolean autoSynchronizeSelection) {
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verifyThread();
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if((isStateful) && (autoSynchronizeSelection != this.autoSynchronizeSelection)) {
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this.autoSynchronizeSelection = autoSynchronizeSelection;
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//Notify the client as to whether it should auto synchronize the selection.//
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sendMessage(MESSAGE_SET_AUTO_SYNCHRONIZE_SELECTION, autoSynchronizeSelection ? Boolean.TRUE : Boolean.FALSE);
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}//if//
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}//setAutoSynchronizeSelection()//
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/**
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* Sets the delay for the auto synchronize selection.
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* @param autoSynchronizeSelectionDelay The delay in terms of milliseconds between the value of zero and ten thousand. A zero value has no delay.
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*/
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public void setAutoSynchronizeSelectionDelay(long autoSynchronizeSelectionDelay) {
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verifyThread();
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if(autoSynchronizeSelectionDelay < 0) {
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autoSynchronizeSelectionDelay = 0;
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}//if//
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else if(autoSynchronizeSelectionDelay > 10000) {
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autoSynchronizeSelectionDelay = 10000;
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}//else if//
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if((isStateful) && (autoSynchronizeSelectionDelay != this.autoSynchronizeSelectionDelay)) {
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this.autoSynchronizeSelectionDelay = autoSynchronizeSelectionDelay;
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sendMessage(MESSAGE_SET_AUTO_SYNCHRONIZE_SELECTION_DELAY, new Long(autoSynchronizeSelectionDelay));
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}//if//
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}//setAutoSynchronizeSelectionDelay()//
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/**
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* Sets whether the client views should be disabled while a selection event is processed.
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* @param blockOnSelection Whether push style buttons stop user input while processing the selection event.
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*/
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public void setBlockOnSelection(boolean blockOnSelection) {
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verifyThread();
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if((!isStateful) && (blockOnSelection != this.blockOnSelection)) {
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this.blockOnSelection = blockOnSelection;
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sendMessage(MESSAGE_SET_BLOCK_ON_SELECTIONS, blockOnSelection ? Boolean.TRUE : Boolean.FALSE);
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}//if//
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}//setBlockOnSelection()//
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/* (non-Javadoc)
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* @see com.foundation.tcv.swt.server.AbstractComponent#internalViewInitialize()
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*/
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protected void internalViewInitialize() {
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super.internalViewInitialize();
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text.initialize();
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image.initialize();
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selection.initialize();
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}//internalViewInitialize()//
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/* (non-Javadoc)
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* @see com.foundation.tcv.swt.server.AbstractComponent#internalViewRelease()
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*/
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protected void internalViewRelease() {
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super.internalViewRelease();
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text.release();
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image.release();
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selection.release();
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}//internalViewRelease()//
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/* (non-Javadoc)
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* @see com.foundation.tcv.swt.server.AbstractComponent#internalViewRefresh()
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*/
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protected void internalViewRefresh() {
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super.internalViewRefresh();
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internalViewRefreshSelection();
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internalViewRefreshText();
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internalViewRefreshImage();
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}//internalViewRefresh()//
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/**
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* Refreshes the button image.
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*/
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protected void internalViewRefreshImage() {
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if(image.refresh()) {
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sendMessage(MESSAGE_SET_IMAGE, image.getValue());
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}//if//
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}//internalViewRefreshImage()//
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/**
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* Refreshes the button text.
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*/
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protected void internalViewRefreshText() {
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if(text.refresh()) {
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sendMessage(MESSAGE_SET_TEXT, text.getValue());
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}//if//
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}//internalViewRefreshText()//
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/**
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* Refreshes the selection.
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*/
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protected void internalViewRefreshSelection() {
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if(selection.refresh()) {
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Object value = selection.getValue();
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Boolean isSelected;
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if(value instanceof Boolean) {
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isSelected = (Boolean) value;
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}//if//
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else if(selectionData != null) {
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isSelected = Comparator.equals(selectionData, value) ? Boolean.TRUE : Boolean.FALSE;
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}//else if//
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else {
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isSelected = value != null ? Boolean.TRUE : Boolean.FALSE;
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}//else//
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sendMessage(MESSAGE_SET_IS_SELECTED, isSelected);
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}//if//
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}//internalViewRefreshSelection()//
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/* (non-Javadoc)
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* @see com.foundation.tcv.swt.server.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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}//else 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 if(resourceAssociation == selection) {
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internalViewRefreshSelection();
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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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/* (non-Javadoc)
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* @see com.foundation.tcv.view.IViewComponent#processMessage(com.foundation.tcv.model.ViewMessage)
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*/
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public Object processMessage(ViewMessage viewMessage) {
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Object result = null;
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switch(viewMessage.getMessageNumber()) {
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case MESSAGE_VIEW_SYNCHRONIZE_SELECTION: {
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Boolean selectionState = (Boolean) viewMessage.getMessageData();
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//Call the selection method.//
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if((!isStateful) && (selectionMethod != null)) {
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selectionMethod.invoke(null, true);
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}//if//
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//Update the selection value.//
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if(isStateful) {
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boolean isSelected = selectionState.booleanValue();
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if(isRadio && isSelected) {
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//Only positive values are sent for radio buttons.//
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selection.setValue(selectionData != null ? selectionData : Boolean.TRUE);
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}//if//
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else if(!isRadio) {
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selection.setValue(isSelected ? Boolean.TRUE : Boolean.FALSE);
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}//else if//
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}//if//
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if(autoValidate) {
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postSynchronizeValidate();
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}//if//
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break;
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}//case//
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default: {
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result = super.processMessage(viewMessage);
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}//default//
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}//switch//
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return result;
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}//processMessage()//
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/* (non-Javadoc)
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* @see com.foundation.tcv.swt.server.AbstractComponent#getClientClassName()
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*/
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protected String getClientClassName() {
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return "com.foundation.tcv.swt.client.Button";
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}//getClientClassName()//
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}//Button//
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