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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.util.*;
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import com.common.util.optimized.*;
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import com.foundation.tcv.swt.*;
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import com.foundation.tcv.view.*;
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/*
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* Extends the CollectionComponent to provide indexing of the collection items.
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* This is an abstract class that is meant to reduce the end control complexity.
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*/
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public abstract class IndexedCollectionComponent extends CollectionComponent implements IIndexedCollectionComponent {
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/**
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* IndexedCollectionComponent constructor.
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* @param parent The parent container.
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* @param name The name of the component.
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*/
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public IndexedCollectionComponent(Container parent, String name, int style) {
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super(parent, name, style);
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}//IndexedCollectionComponent()//
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/**
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* Refreshes the item data.
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* @param item The collection item whose data needs refreshing.
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*/
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protected void internalViewRefreshItem(Object item) {
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RowObject rowObject = getRowObject(item);
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if(rowObject != null) {
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sendMessage(MESSAGE_SET_ITEM, new Object[] {new Integer(rowObject.objectId), getItemData(rowObject)});
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}//if//
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else {
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//Do nothing. It may simply be a stray event (fired before we removed event listeners, but received after they were removed).//
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}//else//
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}//internalViewRefreshItem()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.CollectionComponent#internalViewRefreshCollection(com.common.util.ICollection, com.common.util.ICollection)
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*/
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protected void internalViewRefreshCollection(ICollection newCollection, ICollection oldCollection) {
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//Remove all listeners, mappings, and metadata.//
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itemAllRemoved();
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if((newCollection != null) && (newCollection.getSize() > 0)) {
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IIterator iterator = newCollection.iterator();
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// Object[] itemData = newCollection.getSize() > 0 ? new Object[newCollection.getSize()] : null;
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// Object[] hiddenData = newCollection.getSize() > 0 && getHiddenDataCount() > 0 ? new Object[newCollection.getSize()][getHiddenDataCount()] : null;
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// int[] objectIds = itemData != null ? new int[itemData.length] : null;
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int index = 0;
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//Get the array of strings representing the list contents.//
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while(iterator.hasNext()) {
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Object value = iterator.next();
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itemAdded(value, index++, true);
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// RowObject rowObject = itemAdded(value, index, false);
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//
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// //Add the item mappings without notifying the client.//
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// if(rowObject.isFirstReference()) {
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// //Add the value to the item array.//
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// itemData[index] = getItemData(rowObject);
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//
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// if(hiddenData != null) {
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// hiddenData[index] = getItemHiddenData(value);
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// }//if//
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// }//if//
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//
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// objectIds[index] = rowObject.objectId;
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//
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// index++;
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}//while//
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//Set the collection contents.//
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// sendMessage(MESSAGE_SET_ITEMS, new Object[] {itemData, objectIds, hiddenData});
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//If the selection was invalid previously then refresh the selection since it may no longer be invalid.//
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if(isSelectionInvalid) {
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internalViewRefreshSelection();
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}//if//
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}//if//
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else {
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//Remove all collection contents.//
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sendMessage(MESSAGE_REMOVE_ALL, null);
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}//else//
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}//internalViewRefreshCollection()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.CollectionComponent#internalViewRefreshSelection(java.lang.Object)
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*/
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protected void internalViewRefreshSelection(Object selectedItem) {
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//Send selection index or indices to the remote control where it will determine whether the selection should be changed.//
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//Again: What to do about impossible selections?//
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Object currentSelection = getModelSelection();
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int objectId;
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if(currentSelection != null) {
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RowObject rowObject = getRowObject(currentSelection);
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objectId = rowObject == null ? INVALID_OBJECT_ID : rowObject.objectId;
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if((objectId == -1) && (getAllowUserItems())) {
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sendMessage(MESSAGE_SET_SELECTION, currentSelection.toString());
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}//if//
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else if(objectId == -1) {
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isSelectionInvalid = true;
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//Note: We are no longer invalidating the model selection since this may be a valid action given that the selection may be attached to an attribute that is also attached to another component.//
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sendMessage(MESSAGE_SET_SELECTION, null);
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}//else if//
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else {
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isSelectionInvalid = false;
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//Send selection.//
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sendMessage(MESSAGE_SET_SELECTION, new int[] {objectId});
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}//else//
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}//if//
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else {
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//No selection.//
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sendMessage(MESSAGE_SET_SELECTION, null);
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}//else//
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}//internalViewRefreshSelection()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.CollectionComponent#internalViewRefreshSelections(com.common.util.ICollection, com.common.util.ICollection)
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*/
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protected void internalViewRefreshSelections(ICollection newSelections, ICollection oldSelections) {
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//Collect indexes and collections of indexes for each selection and send all to control. Control will then apply necessary changes.//
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//How to deal with impossible selections? We could send back a deselect message?//
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if(newSelections != null) {
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IntArray selectionIndices = new IntArray(newSelections.getSize());
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IIterator modelSelectionIterator = null;
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modelSelectionIterator = newSelections.iterator();
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//Apply differences between the selection collection and the control selection. Also remove all impossible selections.//
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while(modelSelectionIterator.hasNext()) {
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Object modelSelection = modelSelectionIterator.next();
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RowObject rowObject = getRowObject(modelSelection);
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if(rowObject == null) {
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//An invalid selection because the selection is not in the collection of displayed values.//
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modelSelectionIterator.remove();
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}//if//
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else {
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selectionIndices.add(rowObject.objectId);
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}//else//
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}//while//
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sendMessage(MESSAGE_SET_SELECTION, selectionIndices.toArray());
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}//if//
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else {
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//Remove all selections.//
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sendMessage(MESSAGE_REMOVE_SELECTIONS, null);
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}//else//
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}//internalViewRefreshSelections()//
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/* (non-Javadoc)
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* @see com.foundation.tcv.swt.server.CollectionComponent#registerItem(com.foundation.tcv.swt.server.RowObject)
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*/
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protected void registerItem(RowObject rowObject) {
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super.registerItem(rowObject);
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}//registerItem()//
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/* (non-Javadoc)
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* @see com.foundation.tcv.swt.server.CollectionComponent#unregisterItem(com.foundation.tcv.swt.server.RowObject)
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*/
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protected void unregisterItem(RowObject rowObject) {
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super.unregisterItem(rowObject);
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}//unregisterItem()//
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/* (non-Javadoc)
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* @see com.foundation.tcv.swt.server.CollectionComponent#unregisterItems()
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*/
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protected void unregisterItems() {
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super.unregisterItems();
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}//unregisterItems()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.CollectionComponent#itemSorted(int[])
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*/
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protected void itemSorted(int[] mapping) {
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//TODO: Re-order the indicies in the control and rebuild the mappings.//
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}//itemSorted()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.CollectionComponent#selectionAdded(java.lang.Object)
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*/
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protected void selectionAdded(Object value) {
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RowObject rowObject = getRowObject(value);
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if(rowObject != null) {
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sendMessage(MESSAGE_ADD_SELECTION, new int[] {rowObject.objectId});
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}//if//
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}//selectionAdded()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.CollectionComponent#selectionRemoved(java.lang.Object)
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*/
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protected void selectionRemoved(Object value) {
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RowObject rowObject = getRowObject(value);
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if(rowObject != null) {
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sendMessage(MESSAGE_REMOVE_SELECTION, new int[] {rowObject.objectId});
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}//if//
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}//selectionRemoved()//
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/* (non-Javadoc)
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* @see com.foundation.view.swt.CollectionComponent#selectionAllRemoved()
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*/
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protected void selectionAllRemoved() {
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sendMessage(MESSAGE_REMOVE_SELECTIONS, null);
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}//selectionAllRemoved()//
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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 retVal = null;
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switch(viewMessage.getMessageNumber()) {
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case MESSAGE_VIEW_SYNCHRONIZE_SELECTION: { //Receive the selection information from the client.//
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Object messageData = viewMessage.getMessageData();
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if(getAllowMultiSelection()) {
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int[] selectionObjectIds = (int[]) messageData;
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ICollection modelSelections = getModelSelections();
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//Prevent the selection additions from causing a feedback loop.//
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suspendSelectionHooks = true;
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try {
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if(modelSelections != null) {
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Object[] controlSelectionObjects = new Object[selectionObjectIds.length];
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boolean[] markedControlSelections = new boolean[controlSelectionObjects.length];
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IIterator modelSelectionIterator = modelSelections.iterator();
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LiteList removed = new LiteList(modelSelections.getSize());
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LiteList added = new LiteList(selectionObjectIds.length);
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for(int index = 0; index < selectionObjectIds.length; index++) {
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controlSelectionObjects[index] = getRowObject(selectionObjectIds[index]).value;
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markedControlSelections[index] = false;
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}//for//
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//Add selected items to the selection collection.//
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while(modelSelectionIterator.hasNext()) {
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Object modelSelection = modelSelectionIterator.next();
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boolean found = false;
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for(int index = 0; (!found) && (index < markedControlSelections.length); index++) {
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if(!markedControlSelections[index]) {
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if(controlSelectionObjects[index] == modelSelection) {
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markedControlSelections[index] = true;
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found = true;
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}//if//
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}//if//
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}//for//
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if(!found) {
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removed.add(modelSelection);
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}//if//
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}//while//
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for(int index = 0; index < markedControlSelections.length; index++) {
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if(!markedControlSelections[index]) {
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added.add(controlSelectionObjects[index]);
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}//if//
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}//for//
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modelSelections.replaceAll(removed, added);
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}//if//
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}//try//
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finally {
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suspendSelectionHooks = false;
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}//finally//
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}//if//
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else {
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int selectedObjectId = (messageData != null) && !(messageData instanceof String) ? ((Integer) messageData).intValue() : -1;
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if(selectedObjectId == -1) {
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if((getAllowUserItems()) && (((String) messageData).length() > 0)) { //TODO: If the user wants numbers only, should the conversion occur on the server or the client?//
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//Set the custom value.//
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setModelSelection((String) messageData);
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}//if//
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else {
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setModelSelection(null);
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}//else//
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}//if//
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else {
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setModelSelection(getRowObject(selectedObjectId).value);
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}//else//
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}//else//
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if(getAutoValidate()) {
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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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retVal = super.processMessage(viewMessage);
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}//default//
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}//switch//
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return retVal;
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}//processMessage()//
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}//IndexedCollectionComponent//
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