Java tutorial
/* ********************************************************************** ** ** Copyright notice ** ** ** ** (c) 2005-2009 RSSOwl Development Team ** ** http://www.rssowl.org/ ** ** ** ** 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.rssowl.org/legal/epl-v10.html ** ** ** ** A copy is found in the file epl-v10.html and important notices to the ** ** license from the team is found in the textfile LICENSE.txt distributed ** ** in this package. ** ** ** ** This copyright notice MUST APPEAR in all copies of the file! ** ** ** ** Contributors: ** ** RSSOwl Development Team - initial API and implementation ** ** ** ** ********************************************************************** */ package org.rssowl.ui.internal.actions; import org.eclipse.jface.action.IAction; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.swt.custom.BusyIndicator; import org.eclipse.ui.IObjectActionDelegate; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.PlatformUI; import org.rssowl.core.Owl; import org.rssowl.core.internal.persist.pref.DefaultPreferences; import org.rssowl.core.persist.IBookMark; import org.rssowl.core.persist.IFolder; import org.rssowl.core.persist.IFolderChild; import org.rssowl.core.persist.IMark; import org.rssowl.core.persist.IModelFactory; import org.rssowl.core.persist.INews; import org.rssowl.core.persist.ISearchCondition; import org.rssowl.core.persist.ISearchField; import org.rssowl.core.persist.ISearchMark; import org.rssowl.core.persist.SearchSpecifier; import org.rssowl.core.persist.dao.DynamicDAO; import org.rssowl.core.persist.pref.IPreferenceScope; import org.rssowl.core.util.CoreUtils; import org.rssowl.ui.internal.FolderNewsMark; import org.rssowl.ui.internal.OwlUI; import org.rssowl.ui.internal.dialogs.AggregateNewsDialog; import org.rssowl.ui.internal.dialogs.SearchMarkDialog; import org.rssowl.ui.internal.util.ModelUtils; import org.rssowl.ui.internal.views.explorer.BookMarkExplorer; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.List; /** * Aggregates all bookmarks of a selected folder to be displayed in the * feedview. Asks the user to either use a saved search or * {@link FolderNewsMark} to display. * * @author bpasero */ public class AggregateFolderAction implements IObjectActionDelegate { private ISelection fSelection; private IWorkbenchPart fTargetPart; /** Leave for Reflection */ public AggregateFolderAction() { } /* * @see org.eclipse.ui.IObjectActionDelegate#setActivePart(org.eclipse.jface.action.IAction, org.eclipse.ui.IWorkbenchPart) */ public void setActivePart(IAction action, IWorkbenchPart targetPart) { fTargetPart = targetPart; } /* * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction) */ public void run(IAction action) { if (!fSelection.isEmpty() && fSelection instanceof IStructuredSelection) { Object firstElem = ((IStructuredSelection) fSelection).getFirstElement(); /* Aggregate News of Folder */ if (firstElem instanceof IFolder) { IPreferenceScope preferences = Owl.getPreferenceService().getGlobalScope(); boolean aggregateAsSearch = preferences.getBoolean(DefaultPreferences.AGGREGATE_NEWS_AS_SEARCH); boolean askUserForAggregationOption = !preferences .getBoolean(DefaultPreferences.REMEMBER_AGGREGATE_NEWS_OPTION); /* Ask user for Aggregation Mode if required */ if (askUserForAggregationOption) { AggregateNewsDialog dialog = new AggregateNewsDialog(fTargetPart.getSite().getShell(), ((IFolder) firstElem).getName()); int res = dialog.open(); /* Check for Cancellation */ if (res == IDialogConstants.CANCEL_ID) return; aggregateAsSearch = (res == IDialogConstants.YES_ID); } /* Create Search on Folder */ if (aggregateAsSearch) createAndOpenSearch((IFolder) firstElem); /* Otherwise directly aggregate */ else aggregateFolder((IFolder) firstElem); } } } private void createAndOpenSearch(IFolder folder) { ISearchMark locationSearch = findSearch(folder); if (locationSearch == null) { IModelFactory factory = Owl.getModelFactory(); List<ISearchCondition> conditions = new ArrayList<ISearchCondition>(); ISearchField locationField = factory.createSearchField(INews.LOCATION, INews.class.getName()); conditions.add(factory.createSearchCondition(locationField, SearchSpecifier.IS, ModelUtils.toPrimitive(Collections.singletonList((IFolderChild) folder)))); SearchMarkDialog dialog = new SearchMarkDialog(fTargetPart.getSite().getShell(), folder.getParent(), folder, conditions, true, folder.getProperties()); if (dialog.open() == IDialogConstants.OK_ID) locationSearch = dialog.getSearchMark(); else return; } /* Open Search and Reload Bookmarks that have never been reloaded before */ if (locationSearch != null) { StructuredSelection selection = new StructuredSelection(locationSearch); /* Ensure Selected */ BookMarkExplorer explorer = OwlUI.getOpenedBookMarkExplorer(); if (explorer != null) explorer.getViewSite().getSelectionProvider().setSelection(selection); /* Open */ OwlUI.openInFeedView(fTargetPart.getSite().getPage(), selection); /* Reload if necessary */ List<IBookMark> bookMarksToReload = new ArrayList<IBookMark>(); fillBookMarksToReload(bookMarksToReload, folder); if (!bookMarksToReload.isEmpty()) new ReloadTypesAction(new StructuredSelection(bookMarksToReload.toArray()), fTargetPart.getSite().getShell()).run(); } } private void fillBookMarksToReload(List<IBookMark> bookMarksToReload, IFolder folder) { List<IMark> marks = folder.getMarks(); for (IMark mark : marks) { if (mark instanceof IBookMark) { if ((((IBookMark) mark).getMostRecentNewsDate() == null)) bookMarksToReload.add((IBookMark) mark); } } List<IFolder> childs = folder.getFolders(); for (IFolder child : childs) { fillBookMarksToReload(bookMarksToReload, child); } } private ISearchMark findSearch(IFolderChild folder) { Collection<ISearchMark> existingSearches = DynamicDAO.loadAll(ISearchMark.class); for (ISearchMark search : existingSearches) { List<ISearchCondition> conditions = search.getSearchConditions(); if (conditions.size() == 1) { ISearchCondition condition = conditions.get(0); /* Check on Search Field */ ISearchField field = condition.getField(); if (field.getId() != INews.LOCATION) continue; /* Check on Search Specifier */ SearchSpecifier specifier = condition.getSpecifier(); if (specifier != SearchSpecifier.IS) continue; /* Check on Search Value */ Object value = condition.getValue(); if (!(value instanceof Long[][])) continue; Long[][] valueLong = (Long[][]) value; if (valueLong.length == 0) continue; if (valueLong[CoreUtils.FOLDER].length != 1) continue; if (valueLong[CoreUtils.FOLDER][0] != null && valueLong[CoreUtils.FOLDER][0].equals(folder.getId())) return search; } } return null; } /* Create in-memory Newsmark */ private void aggregateFolder(final IFolder folder) { BusyIndicator.showWhile(PlatformUI.getWorkbench().getDisplay(), new Runnable() { public void run() { FolderNewsMark folderNewsMark = new FolderNewsMark(folder); StructuredSelection newSelection = new StructuredSelection(folderNewsMark); /* Open in Feedview */ OwlUI.openInFeedView(fTargetPart.getSite().getPage(), newSelection); } }); } /* * @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection) */ public void selectionChanged(IAction action, ISelection selection) { fSelection = selection; } }