| /******************************************************************************* |
| * Copyright (c) 2012, 2014 EclipseSource and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * EclipseSource - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.nebula.widgets.grid.internal.griditemkit; |
| |
| import static org.eclipse.rap.rwt.internal.lifecycle.WidgetLCAUtil.preserveProperty; |
| import static org.eclipse.rap.rwt.internal.lifecycle.WidgetLCAUtil.renderProperty; |
| import static org.eclipse.rap.rwt.internal.protocol.RemoteObjectFactory.createRemoteObject; |
| import static org.eclipse.rap.rwt.internal.protocol.RemoteObjectFactory.getRemoteObject; |
| |
| import java.io.IOException; |
| |
| import org.eclipse.nebula.widgets.grid.Grid; |
| import org.eclipse.nebula.widgets.grid.GridItem; |
| import org.eclipse.nebula.widgets.grid.internal.IGridAdapter; |
| import org.eclipse.nebula.widgets.grid.internal.IGridItemAdapter; |
| import org.eclipse.rap.rwt.internal.lifecycle.AbstractWidgetLCA; |
| import org.eclipse.rap.rwt.internal.lifecycle.WidgetAdapter; |
| import org.eclipse.rap.rwt.internal.lifecycle.WidgetLCAUtil; |
| import org.eclipse.rap.rwt.internal.lifecycle.WidgetUtil; |
| import org.eclipse.rap.rwt.internal.remote.RemoteObjectImpl; |
| import org.eclipse.rap.rwt.remote.RemoteObject; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.Font; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.internal.widgets.IWidgetColorAdapter; |
| import org.eclipse.swt.internal.widgets.IWidgetFontAdapter; |
| import org.eclipse.swt.internal.widgets.WidgetAdapterImpl; |
| import org.eclipse.swt.widgets.Widget; |
| |
| |
| @SuppressWarnings("restriction") |
| public class GridItemLCA extends AbstractWidgetLCA { |
| |
| private static final String TYPE = "rwt.widgets.GridItem"; |
| |
| private static final String PROP_INDEX = "index"; |
| private static final String PROP_ITEM_COUNT = "itemCount"; |
| private static final String PROP_HEIGHT = "height"; |
| private static final String PROP_TEXTS = "texts"; |
| private static final String PROP_IMAGES = "images"; |
| private static final String PROP_CELL_BACKGROUNDS = "cellBackgrounds"; |
| private static final String PROP_CELL_FOREGROUNDS = "cellForegrounds"; |
| private static final String PROP_CELL_FONTS = "cellFonts"; |
| private static final String PROP_EXPANDED = "expanded"; |
| private static final String PROP_CELL_CHECKED = "cellChecked"; |
| private static final String PROP_CELL_GRAYED = "cellGrayed"; |
| private static final String PROP_CELL_CHECKABLE = "cellCheckable"; |
| private static final String PROP_CACHED = "cached"; |
| |
| private static final int ZERO = 0; |
| |
| @Override |
| public void renderInitialization( Widget widget ) throws IOException { |
| GridItem item = ( GridItem )widget; |
| RemoteObject remoteObject = createRemoteObject( item, TYPE ); |
| remoteObject.setHandler( new GridItemOperationHandler( item ) ); |
| remoteObject.set( "parent", WidgetUtil.getId( getParent( item ) ) ); |
| } |
| |
| @Override |
| public void preserveValues( Widget widget ) { |
| GridItem item = ( GridItem )widget; |
| preserveProperty( item, PROP_INDEX, getItemIndex( item ) ); |
| preserveProperty( item, PROP_CACHED, isCached( item ) ); |
| if( isCached( item ) ) { |
| WidgetLCAUtil.preserveCustomVariant( item ); |
| WidgetLCAUtil.preserveData( item ); |
| preserveProperty( item, PROP_ITEM_COUNT, item.getItemCount() ); |
| preserveProperty( item, PROP_HEIGHT, item.getHeight() ); |
| preserveProperty( item, PROP_TEXTS, getTexts( item ) ); |
| preserveProperty( item, PROP_IMAGES, getImages( item ) ); |
| WidgetLCAUtil.preserveBackground( item, getUserBackground( item ) ); |
| WidgetLCAUtil.preserveForeground( item, getUserForeground( item ) ); |
| WidgetLCAUtil.preserveFont( item, getUserFont( item ) ); |
| preserveProperty( item, PROP_CELL_BACKGROUNDS, getCellBackgrounds( item ) ); |
| preserveProperty( item, PROP_CELL_FOREGROUNDS, getCellForegrounds( item ) ); |
| preserveProperty( item, PROP_CELL_FONTS, getCellFonts( item ) ); |
| preserveProperty( item, PROP_EXPANDED, item.isExpanded() ); |
| preserveProperty( item, PROP_CELL_CHECKED, getCellChecked( item ) ); |
| preserveProperty( item, PROP_CELL_GRAYED, getCellGrayed( item ) ); |
| preserveProperty( item, PROP_CELL_CHECKABLE, getCellCheckable( item ) ); |
| } |
| } |
| |
| @Override |
| public void renderChanges( Widget widget ) throws IOException { |
| final GridItem item = ( GridItem )widget; |
| renderProperty( item, PROP_INDEX, getItemIndex( item ), -1 ); |
| if( wasCleared( item ) ) { |
| renderClear( item ); |
| } else if( isCached( item ) ) { |
| preservingInitialized( item, new Runnable() { |
| public void run() { |
| // items that were uncached and are now cached (materialized) are handled as if they were |
| // just created (initialized = false) |
| if( !wasCached( item ) ) { |
| setInitialized( item, false ); |
| } |
| renderProperties( item ); |
| } |
| } ); |
| } |
| } |
| |
| private static void renderClear( GridItem item ) { |
| getRemoteObject( item ).call( "clear", null ); |
| } |
| |
| private static void renderProperties( GridItem item ) { |
| WidgetLCAUtil.renderCustomVariant( item ); |
| WidgetLCAUtil.renderData( item ); |
| renderProperty( item, PROP_ITEM_COUNT, item.getItemCount(), ZERO ); |
| renderProperty( item, PROP_HEIGHT, item.getHeight(), item.getParent().getItemHeight() ); |
| renderProperty( item, PROP_TEXTS, getTexts( item ), getDefaultTexts( item ) ); |
| renderProperty( item, PROP_IMAGES, getImages( item ), new Image[ getColumnCount( item ) ] ); |
| WidgetLCAUtil.renderBackground( item, getUserBackground( item ) ); |
| WidgetLCAUtil.renderForeground( item, getUserForeground( item ) ); |
| WidgetLCAUtil.renderFont( item, getUserFont( item ) ); |
| renderProperty( item, |
| PROP_CELL_BACKGROUNDS, |
| getCellBackgrounds( item ), |
| new Color[ getColumnCount( item ) ] ); |
| renderProperty( item, |
| PROP_CELL_FOREGROUNDS, |
| getCellForegrounds( item ), |
| new Color[ getColumnCount( item ) ] ); |
| renderProperty( item, |
| PROP_CELL_FONTS, |
| getCellFonts( item ), |
| new Font[ getColumnCount( item ) ] ); |
| renderProperty( item, PROP_EXPANDED, item.isExpanded(), false ); |
| renderProperty( item, |
| PROP_CELL_CHECKED, |
| getCellChecked( item ), |
| new boolean[ getColumnCount( item ) ] ); |
| renderProperty( item, |
| PROP_CELL_GRAYED, |
| getCellGrayed( item ), |
| new boolean[ getColumnCount( item ) ] ); |
| renderProperty( item, |
| PROP_CELL_CHECKABLE, |
| getCellCheckable( item ), |
| getDefaultCellCheckable( item ) ); |
| } |
| |
| @Override |
| public void renderDispose( Widget widget ) throws IOException { |
| GridItem item = ( GridItem )widget; |
| RemoteObject remoteObject = getRemoteObject( widget ); |
| if( !isParentDisposed( item ) ) { |
| // The tree disposes the items itself on the client (faster) |
| remoteObject.destroy(); |
| } else { |
| ( ( RemoteObjectImpl )remoteObject ).markDestroyed(); |
| } |
| } |
| |
| |
| ////////////////// |
| // Helping methods |
| |
| private static boolean wasCleared( GridItem item ) { |
| return !isCached( item ) && wasCached( item ); |
| } |
| |
| private static boolean isCached( GridItem item ) { |
| return getGridItemAdapter( item ).isCached(); |
| } |
| |
| private static boolean wasCached( GridItem item ) { |
| WidgetAdapter adapter = WidgetUtil.getAdapter( item ); |
| if( adapter.isInitialized() ) { |
| return Boolean.TRUE.equals( adapter.getPreserved( PROP_CACHED ) ); |
| } |
| return false; |
| } |
| |
| private static Widget getParent( GridItem item ) { |
| Widget result = item.getParent(); |
| GridItem parentItem = item.getParentItem(); |
| if( parentItem != null ) { |
| result = item.getParentItem(); |
| } |
| return result; |
| } |
| |
| private static int getItemIndex( GridItem item ) { |
| return getGridAdapter( item.getParent() ).getItemIndex( item ); |
| } |
| |
| private static boolean isParentDisposed( GridItem item ) { |
| return getGridItemAdapter( item ).isParentDisposed(); |
| } |
| |
| private static String[] getTexts( GridItem item ) { |
| String[] result = new String[ getColumnCount( item ) ]; |
| for( int i = 0; i < result.length; i++ ) { |
| result[ i ] = item.getText( i ); |
| } |
| return result; |
| } |
| |
| private static String[] getDefaultTexts( GridItem item ) { |
| String[] result = new String[ getColumnCount( item ) ]; |
| for( int i = 0; i < result.length; i++ ) { |
| result[ i ] = ""; |
| } |
| return result; |
| } |
| |
| private static Image[] getImages( GridItem item ) { |
| Image[] result = new Image[ getColumnCount( item ) ]; |
| for( int i = 0; i < result.length; i++ ) { |
| result[ i ] = item.getImage( i ); |
| } |
| return result; |
| } |
| |
| private static Color getUserBackground( GridItem item ) { |
| return item.getAdapter( IWidgetColorAdapter.class ).getUserBackground(); |
| } |
| |
| private static Color getUserForeground( GridItem item ) { |
| return item.getAdapter( IWidgetColorAdapter.class ).getUserForeground(); |
| } |
| |
| private static Font getUserFont( GridItem item ) { |
| return item.getAdapter( IWidgetFontAdapter.class ).getUserFont(); |
| } |
| |
| private static Color[] getCellBackgrounds( GridItem item ) { |
| return getGridItemAdapter( item ).getCellBackgrounds(); |
| } |
| |
| private static Color[] getCellForegrounds( GridItem item ) { |
| return getGridItemAdapter( item ).getCellForegrounds(); |
| } |
| |
| private static Font[] getCellFonts( GridItem item ) { |
| return getGridItemAdapter( item ).getCellFonts(); |
| } |
| |
| private static boolean[] getCellChecked( GridItem item ) { |
| boolean[] result = new boolean[ getColumnCount( item ) ]; |
| for( int i = 0; i < result.length; i++ ) { |
| result[ i ] = item.getChecked( i ); |
| } |
| return result; |
| } |
| |
| private static boolean[] getCellGrayed( GridItem item ) { |
| boolean[] result = new boolean[ getColumnCount( item ) ]; |
| for( int i = 0; i < result.length; i++ ) { |
| result[ i ] = item.getGrayed( i ); |
| } |
| return result; |
| } |
| |
| private static boolean[] getCellCheckable( GridItem item ) { |
| boolean[] result = new boolean[ getColumnCount( item ) ]; |
| for( int i = 0; i < result.length; i++ ) { |
| result[ i ] = item.getCheckable( i ); |
| } |
| return result; |
| } |
| |
| private static boolean[] getDefaultCellCheckable( GridItem item ) { |
| boolean[] result = new boolean[ getColumnCount( item ) ]; |
| for( int i = 0; i < result.length; i++ ) { |
| result[ i ] = true; |
| } |
| return result; |
| } |
| |
| private static int getColumnCount( GridItem item ) { |
| return Math.max( 1, item.getParent().getColumnCount() ); |
| } |
| |
| private static IGridAdapter getGridAdapter( Grid grid ) { |
| return grid.getAdapter( IGridAdapter.class ); |
| } |
| |
| private static IGridItemAdapter getGridItemAdapter( GridItem item ) { |
| return item.getAdapter( IGridItemAdapter.class ); |
| } |
| |
| private static void preservingInitialized( GridItem item, Runnable runnable ) { |
| boolean initialized = WidgetUtil.getAdapter( item ).isInitialized(); |
| runnable.run(); |
| setInitialized( item, initialized ); |
| } |
| |
| private static void setInitialized( GridItem item, boolean initialized ) { |
| WidgetAdapterImpl adapter = ( WidgetAdapterImpl )WidgetUtil.getAdapter( item ); |
| adapter.setInitialized( initialized ); |
| } |
| |
| } |