ingo@805: package de.intevation.flys.client.client.ui;
ingo@805: 
ingo@805: import java.util.ArrayList;
ingo@805: import java.util.List;
ingo@805: 
ingo@805: import com.google.gwt.core.client.GWT;
ingo@805: import com.google.gwt.user.client.rpc.AsyncCallback;
ingo@805: 
ingo@805: import com.smartgwt.client.util.SC;
ingo@805: import com.smartgwt.client.widgets.Canvas;
ingo@805: import com.smartgwt.client.widgets.grid.ListGrid;
ingo@805: import com.smartgwt.client.widgets.grid.ListGridRecord;
ingo@805: import com.smartgwt.client.widgets.grid.events.EditCompleteEvent;
ingo@805: import com.smartgwt.client.widgets.grid.events.EditCompleteHandler;
ingo@805: 
ingo@805: import de.intevation.flys.client.shared.model.Collection;
ingo@805: import de.intevation.flys.client.shared.model.FacetRecord;
ingo@805: import de.intevation.flys.client.shared.model.OutputMode;
ingo@805: import de.intevation.flys.client.shared.model.Theme;
ingo@805: import de.intevation.flys.client.shared.model.ThemeList;
ingo@805: 
ingo@805: import de.intevation.flys.client.client.Config;
ingo@805: import de.intevation.flys.client.client.FLYSConstants;
ingo@805: import de.intevation.flys.client.client.event.HasOutputParameterChangeHandlers;
felix@858: import de.intevation.flys.client.client.event.HasRedrawRequestHandlers;
ingo@805: import de.intevation.flys.client.client.event.OnMoveEvent;
ingo@805: import de.intevation.flys.client.client.event.OnMoveHandler;
ingo@805: import de.intevation.flys.client.client.event.OutputParameterChangeEvent;
ingo@805: import de.intevation.flys.client.client.event.OutputParameterChangeHandler;
felix@858: import de.intevation.flys.client.client.event.RedrawRequestHandler;
ingo@911: import de.intevation.flys.client.client.event.RedrawRequestEvent;
ingo@911: import de.intevation.flys.client.client.event.RedrawRequestEvent.Type;
ingo@805: import de.intevation.flys.client.client.services.CollectionAttributeService;
ingo@805: import de.intevation.flys.client.client.services.CollectionAttributeServiceAsync;
ingo@805: 
ingo@805: 
ingo@805: public abstract class ThemePanel
felix@854: extends               Canvas
felix@854: implements            OnMoveHandler,
felix@854:                       EditCompleteHandler,
felix@858:                       HasOutputParameterChangeHandlers,
felix@858:                       HasRedrawRequestHandlers
ingo@805: {
ingo@805:     protected CollectionAttributeServiceAsync updater =
ingo@805:         GWT.create(CollectionAttributeService.class);
ingo@805: 
ingo@805:     private FLYSConstants MSG = GWT.create(FLYSConstants.class);
ingo@805: 
felix@858:     /** List of OutParameterChangedHandler. */
ingo@805:     protected List<OutputParameterChangeHandler> outHandlers;
felix@858:     /** List of ChartShallRedrawHandler. */
felix@858:     protected List<RedrawRequestHandler> redrawRequestHandlers;
ingo@805: 
ingo@805:     protected Collection collection;
ingo@805:     protected OutputMode mode;
ingo@805: 
ingo@805:     protected ThemeNavigationPanel navigation;
ingo@805:     protected ListGrid list;
ingo@805: 
ingo@805: 
felix@854:     /**
felix@854:      * Setup Grid, navigation bar.
felix@854:      * @param collection Collection for which to show themes.
felix@854:      */
ingo@805:     public ThemePanel(Collection collection, OutputMode mode) {
ingo@805:         this.collection  = collection;
ingo@805:         this.mode        = mode;
felix@854:         this.list        = createGrid();
felix@854: 
felix@858:         this.redrawRequestHandlers = new ArrayList<RedrawRequestHandler>();
ingo@805:         this.outHandlers = new ArrayList<OutputParameterChangeHandler>();
ingo@805:         this.navigation  = new ThemeNavigationPanel();
ingo@805:         this.navigation.addOnMoveHandler(this);
ingo@805:     }
ingo@805: 
ingo@805: 
ingo@805:     public abstract void activateTheme(Theme theme, boolean active);
ingo@805: 
ingo@805: 
ingo@805:     /**
ingo@805:      * Replace the current collection with a new one. <b>NOTE: this operation
ingo@805:      * triggers updateGrid() which modifies the themes in the grid.</b>
ingo@805:      *
ingo@805:      * @param collection The new collection object.
ingo@805:      */
ingo@805:     protected void setCollection(Collection collection) {
ingo@805:         this.collection = collection;
ingo@805: 
ingo@805:         updateGrid();
ingo@805:     }
ingo@805: 
ingo@805: 
ingo@805:     /**
ingo@805:      * Returns the ThemeList of the current collection and output mode.
ingo@805:      *
ingo@805:      * @return the current ThemeList.
ingo@805:      */
ingo@805:     public ThemeList getThemeList() {
ingo@805:         return collection.getThemeList(mode.getName());
ingo@805:     }
ingo@805: 
ingo@805: 
ingo@805:     /**
ingo@805:      * Registers a new OutputParameterChangeHandler.
ingo@805:      *
ingo@805:      * @param h The new handler.
ingo@805:      */
ingo@805:     public void addOutputParameterChangeHandler(OutputParameterChangeHandler h){
ingo@805:         if (h != null) {
ingo@805:             outHandlers.add(h);
ingo@805:         }
ingo@805:     }
ingo@805: 
ingo@805: 
ingo@805:     /**
felix@858:      * Registers a RedrawRequestHandler.
felix@858:      *
felix@858:      * @param h The new handler.
felix@858:      */
felix@858:     public void addRedrawRequestHandler(RedrawRequestHandler h){
felix@858:         if (h != null) {
felix@858:             redrawRequestHandlers.add(h);
felix@858:         }
felix@858:     }
felix@858: 
felix@858: 
felix@858:     /**
felix@858:      * Request a redraw of e.g. a Chart.
felix@858:      */
felix@858:     protected void requestRedraw() {
felix@858:         for (RedrawRequestHandler handler: redrawRequestHandlers) {
ingo@911:             handler.onRedrawRequest(new RedrawRequestEvent(Type.RESET));
felix@858:         }
felix@858:     }
felix@858: 
felix@858: 
felix@858:     /**
ingo@805:      * Called when the attribution of an output changed. It informs the
ingo@805:      * registered handlers about the changes.
ingo@805:      */
ingo@805:     protected void fireOutputParameterChanged() {
ingo@805:         OutputParameterChangeEvent evt = new OutputParameterChangeEvent();
ingo@805: 
ingo@805:         for (OutputParameterChangeHandler handler: outHandlers) {
ingo@805:             handler.onOutputParameterChanged(evt);
ingo@805:         }
ingo@805:     }
ingo@805: 
ingo@805: 
ingo@805:     /**
ingo@805:      * This method is used to clear the current theme grid and add new updated
ingo@805:      * data.
ingo@805:      */
ingo@805:     protected void updateGrid() {
ingo@805:         GWT.log("ThemePanel.updateGrid");
ingo@805: 
ingo@805:         clearGrid();
ingo@805: 
ingo@805:         ThemeList themeList = getThemeList();
ingo@805: 
ingo@805:         if (themeList == null) {
ingo@805:             GWT.log("ERROR: No theme list.");
ingo@805:             return;
ingo@805:         }
ingo@805: 
ingo@805:         int count = themeList.getThemeCount();
ingo@805: 
ingo@805:         for (int i = 1; i <= count; i++) {
ingo@805:             Theme theme = themeList.getThemeAt(i);
ingo@805: 
ingo@805:             if (theme == null) {
ingo@805:                 continue;
ingo@805:             }
ingo@805: 
ingo@805:             list.addData(new FacetRecord(theme));
ingo@805:         }
ingo@805: 
ingo@805:         fireOutputParameterChanged();
ingo@805:     }
ingo@805: 
ingo@805: 
ingo@805:     /**
ingo@805:      * This method triggers the CollectionAttributeService. Based on the current
ingo@805:      * collectin settings, the attribute of the collection is modified or not.
ingo@805:      * But in every case, we will get a new collection object - which might be
ingo@805:      * the same as the current one.
ingo@805:      */
ingo@805:     public void updateCollection() {
ingo@805:         final Config config = Config.getInstance();
ingo@805:         final String url    = config.getServerUrl();
ingo@805:         final String loc    = config.getLocale();
ingo@805: 
ingo@805:         GWT.log("ThemePanel.updateCollection via RPC now");
ingo@805: 
ingo@805:         // don't forget to enable the panel after the request has finished!
ingo@805:         disable();
ingo@805: 
ingo@805:         updater.update(collection, url, loc, new AsyncCallback<Collection>() {
ingo@805:             public void onFailure(Throwable caught) {
ingo@805:                 GWT.log("Could not update collection attributes.");
ingo@805:                 SC.warn(MSG.getString(caught.getMessage()));
ingo@805: 
ingo@805:                 enable();
ingo@805:             }
ingo@805: 
ingo@805: 
ingo@805:             public void onSuccess(Collection collection) {
ingo@805:                 setCollection(collection);
ingo@805: 
ingo@805:                 enable();
ingo@805:             }
ingo@805:         });
ingo@805:     }
ingo@805: 
ingo@805: 
felix@854:     /**
felix@854:      * Create and configure the Grid to display.
felix@854:      */
felix@854:     protected ListGrid createGrid() {
felix@854:         return new ListGrid();
felix@854:     }
ingo@805: 
ingo@805: 
ingo@805:     /**
ingo@805:      * A method that removes all records from theme grid.
ingo@805:      */
ingo@805:     protected void clearGrid() {
ingo@805:         ListGridRecord[] records = list.getRecords();
ingo@805: 
ingo@805:         if (records == null || records.length == 0) {
ingo@805:             return;
ingo@805:         }
ingo@805: 
ingo@805:         for (ListGridRecord record: records) {
ingo@805:             list.removeData(record);
ingo@805:         }
ingo@805:     }
ingo@805: 
ingo@805: 
ingo@805:     /**
ingo@805:      * This method is called after a cell in the theme grid has been modified.
ingo@805:      *
ingo@805:      * @param event The event that stores information about the modified record.
ingo@805:      */
ingo@805:     @Override
ingo@805:     public void onEditComplete(EditCompleteEvent event) {
ingo@805:         GWT.log("Edited record.");
ingo@805: 
ingo@805:         int         row = event.getRowNum();
ingo@805:         FacetRecord rec = (FacetRecord) list.getRecord(row);
ingo@805: 
ingo@805:         activateTheme(rec.getTheme(), rec.getActive());
ingo@805: 
ingo@805:         updateCollection();
ingo@805:     }
ingo@805: 
ingo@805: 
ingo@805:     @Override
ingo@805:     public void onMove(OnMoveEvent event) {
ingo@805:         int type = event.getType();
ingo@805: 
ingo@805:         GWT.log("ThemePanel.onMove: " + type);
ingo@805: 
ingo@805:         ListGridRecord[] records = list.getSelection();
ingo@805: 
ingo@805:         if (records == null || records.length == 0) {
ingo@805:             GWT.log("ThemePanel.onMove: No records selected.");
ingo@805:             return;
ingo@805:         }
ingo@805: 
ingo@805:         switch (type) {
ingo@805:             case 0: moveRecordsTop(records); break;
ingo@805:             case 1: moveRecordsUp(records); break;
ingo@805:             case 2: moveRecordsDown(records); break;
ingo@805:             case 3: moveRecordsBottom(records); break;
ingo@805:         }
ingo@805: 
ingo@805:         updateCollection();
ingo@805:     }
ingo@805: 
ingo@805: 
ingo@805:     /**
ingo@805:      * Moves the selected grid records (themes) to the top of the grid.
ingo@805:      *
ingo@805:      * @param records The selected themes in the list. Null not permitted.
ingo@805:      */
ingo@805:     protected void moveRecordsTop(ListGridRecord[] records) {
ingo@805:         ThemeList themeList = getThemeList();
ingo@805: 
ingo@805:         int idx = 1;
ingo@805: 
ingo@805:         for (ListGridRecord record: records) {
ingo@805:             Theme theme = ((FacetRecord) record).getTheme();
ingo@805:             themeList.setThemePosition(theme, idx++);
ingo@805:         }
ingo@805: 
ingo@805:         updateGrid();
ingo@805:     }
ingo@805: 
ingo@805: 
ingo@805:     /**
ingo@805:      * Moves the selected grid records (themes) one step up.
ingo@805:      *
ingo@805:      * @param records The selected themes in the list. Null not permitted.
ingo@805:      */
ingo@805:     protected void moveRecordsUp(ListGridRecord[] records) {
ingo@805:         ThemeList themeList = getThemeList();
ingo@805: 
ingo@805:         int[] newPos = new int[records.length];
ingo@805: 
ingo@805:         for (int i = 0; i < records.length ; i++) {
ingo@805:             Theme theme = ((FacetRecord) records[i]).getTheme();
ingo@805:             newPos[i]   = theme.getPosition() - 1;
ingo@805:         }
ingo@805: 
ingo@805:         for (int i = 0; i < records.length ; i++) {
ingo@805:             Theme theme = ((FacetRecord) records[i]).getTheme();
ingo@805:             themeList.setThemePosition(theme, newPos[i]);
ingo@805:         }
ingo@805: 
ingo@805:         updateGrid();
ingo@805:     }
ingo@805: 
ingo@805: 
ingo@805:     /**
ingo@805:      * Moves the selected grid records (themes) one step down.
ingo@805:      *
ingo@805:      * @param records The selected themes in the list. Null not permitted.
ingo@805:      */
ingo@805:     protected void moveRecordsDown(ListGridRecord[] records) {
ingo@805:         ThemeList themeList = getThemeList();
ingo@805: 
ingo@805:         int[] newPos = new int[records.length];
ingo@805: 
ingo@805:         for (int i = records.length-1; i >= 0; i--) {
ingo@805:             Theme theme = ((FacetRecord) records[i]).getTheme();
ingo@805:             newPos[i] = theme.getPosition()+1;
ingo@805:         }
ingo@805: 
ingo@805:         for (int i = records.length-1; i >= 0; i--) {
ingo@805:             Theme theme = ((FacetRecord) records[i]).getTheme();
ingo@805:             themeList.setThemePosition(theme, newPos[i]);
ingo@805:         }
ingo@805: 
ingo@805:         updateGrid();
ingo@805:     }
ingo@805: 
ingo@805: 
ingo@805:     /**
ingo@805:      * Moves the selected grid records (themes) to the bottom of the grid.
ingo@805:      *
ingo@805:      * @param records The selected themes in the list. Null not permitted.
ingo@805:      */
ingo@805:     protected void moveRecordsBottom(ListGridRecord[] records) {
ingo@805:         ThemeList themeList = getThemeList();
ingo@805: 
ingo@805:         int idx = themeList.getThemeCount();
ingo@805: 
ingo@805:         for (int i = records.length-1; i >= 0; i--) {
ingo@805:             Theme theme = ((FacetRecord) records[i]).getTheme();
ingo@805:             themeList.setThemePosition(theme, idx--);
ingo@805:         }
ingo@805: 
ingo@805:         updateGrid();
ingo@805:     }
ingo@805: }
ingo@805: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :