Java tutorial
/* * Copyright (c) 2012, the Dart project authors. * * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.eclipse.org/legal/epl-v10.html * * Unless required by applicable law or agreed to in writing, software distributed under the License * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express * or implied. See the License for the specific language governing permissions and limitations under * the License. */ package com.google.dart.tools.search.internal.ui.text; import com.google.dart.tools.search.internal.ui.Messages; import com.google.dart.tools.search.internal.ui.SearchMessages; import com.google.dart.tools.search.ui.IContextMenuConstants; import com.google.dart.tools.search.ui.ISearchResultViewPart; import com.google.dart.tools.search.ui.text.AbstractTextSearchResult; import com.google.dart.tools.search.ui.text.AbstractTextSearchViewPage; import com.google.dart.tools.search.ui.text.Match; import org.eclipse.core.filesystem.EFS; import org.eclipse.core.filesystem.IFileStore; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IFile; import org.eclipse.core.runtime.IAdaptable; import org.eclipse.jface.action.IMenuManager; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.dialogs.ErrorDialog; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.OpenEvent; import org.eclipse.jface.viewers.StructuredViewer; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.swt.dnd.DND; import org.eclipse.swt.dnd.Transfer; import org.eclipse.ui.IMemento; import org.eclipse.ui.PartInitException; import org.eclipse.ui.actions.ActionContext; import org.eclipse.ui.actions.ActionGroup; import org.eclipse.ui.ide.IDE; import org.eclipse.ui.part.ResourceTransfer; import org.eclipse.ui.views.navigator.NavigatorDragAdapter; import java.io.File; import java.util.Set; @SuppressWarnings("deprecation") public class FileSearchPage extends AbstractTextSearchViewPage implements IAdaptable { public static class DecoratorIgnoringViewerSorter extends ViewerComparator { private final ILabelProvider fLabelProvider; public DecoratorIgnoringViewerSorter(ILabelProvider labelProvider) { fLabelProvider = labelProvider; } @Override public int category(Object element) { if (element instanceof IContainer) { return 1; } return 2; } @SuppressWarnings("unchecked") @Override public int compare(Viewer viewer, Object e1, Object e2) { int cat1 = category(e1); int cat2 = category(e2); if (cat1 != cat2) { return cat1 - cat2; } if (e1 instanceof LineElement && e2 instanceof LineElement) { LineElement m1 = (LineElement) e1; LineElement m2 = (LineElement) e2; return m1.getOffset() - m2.getOffset(); } String name1 = fLabelProvider.getText(e1); String name2 = fLabelProvider.getText(e2); if (name1 == null) { name1 = "";//$NON-NLS-1$ } if (name2 == null) { name2 = "";//$NON-NLS-1$ } return getComparator().compare(name1, name2); } } private static final String KEY_SORTING = "com.google.dart.tools.search.resultpage.sorting"; //$NON-NLS-1$ private static final String KEY_LIMIT = "com.google.dart.tools.search.resultpage.limit"; //$NON-NLS-1$ private static final int DEFAULT_ELEMENT_LIMIT = 1000; private ActionGroup fActionGroup; private IFileSearchContentProvider fContentProvider; private int fCurrentSortOrder; private SortAction fSortByNameAction; private SortAction fSortByPathAction; public FileSearchPage() { fSortByNameAction = new SortAction(SearchMessages.FileSearchPage_sort_name_label, this, FileLabelProvider.SHOW_LABEL_PATH); fSortByPathAction = new SortAction(SearchMessages.FileSearchPage_sort_path_label, this, FileLabelProvider.SHOW_PATH_LABEL); setElementLimit(new Integer(DEFAULT_ELEMENT_LIMIT)); } @Override public void dispose() { fActionGroup.dispose(); super.dispose(); } @Override public Object getAdapter(@SuppressWarnings("rawtypes") Class adapter) { return null; } @Override public int getDisplayedMatchCount(Object element) { if (showLineMatches()) { if (element instanceof LineElement) { LineElement lineEntry = (LineElement) element; return lineEntry.getNumberOfMatches(getInput()); } return 0; } return super.getDisplayedMatchCount(element); } @Override public Match[] getDisplayedMatches(Object element) { if (showLineMatches()) { if (element instanceof LineElement) { LineElement lineEntry = (LineElement) element; return lineEntry.getMatches(getInput()); } return new Match[0]; } return super.getDisplayedMatches(element); } @Override public String getLabel() { String label = super.getLabel(); StructuredViewer viewer = getViewer(); if (viewer instanceof TableViewer) { TableViewer tv = (TableViewer) viewer; AbstractTextSearchResult result = getInput(); if (result != null) { int itemCount = ((IStructuredContentProvider) tv.getContentProvider()) .getElements(getInput()).length; if (showLineMatches()) { int matchCount = getInput().getMatchCount(); if (itemCount < matchCount) { return Messages.format(SearchMessages.FileSearchPage_limited_format_matches, new Object[] { label, new Integer(itemCount), new Integer(matchCount) }); } } else { int fileCount = getInput().getElements().length; if (itemCount < fileCount) { return Messages.format(SearchMessages.FileSearchPage_limited_format_files, new Object[] { label, new Integer(itemCount), new Integer(fileCount) }); } } } } return label; } @Override public StructuredViewer getViewer() { return super.getViewer(); } @Override public void restoreState(IMemento memento) { super.restoreState(memento); try { fCurrentSortOrder = getSettings().getInt(KEY_SORTING); } catch (NumberFormatException e) { fCurrentSortOrder = fSortByNameAction.getSortOrder(); } int elementLimit = DEFAULT_ELEMENT_LIMIT; try { elementLimit = getSettings().getInt(KEY_LIMIT); } catch (NumberFormatException e) { } if (memento != null) { Integer value = memento.getInteger(KEY_SORTING); if (value != null) { fCurrentSortOrder = value.intValue(); } value = memento.getInteger(KEY_LIMIT); if (value != null) { elementLimit = value.intValue(); } } setElementLimit(new Integer(elementLimit)); } @Override public void saveState(IMemento memento) { super.saveState(memento); memento.putInteger(KEY_SORTING, fCurrentSortOrder); memento.putInteger(KEY_LIMIT, getElementLimit().intValue()); } @Override public void setElementLimit(Integer elementLimit) { super.setElementLimit(elementLimit); int limit = elementLimit.intValue(); getSettings().put(KEY_LIMIT, limit); } public void setSortOrder(int sortOrder) { fCurrentSortOrder = sortOrder; DecoratingFileSearchLabelProvider lpWrapper = (DecoratingFileSearchLabelProvider) getViewer() .getLabelProvider(); ((FileLabelProvider) lpWrapper.getStyledStringProvider()).setOrder(sortOrder); getViewer().refresh(); getSettings().put(KEY_SORTING, fCurrentSortOrder); } @Override public void setViewPart(ISearchResultViewPart part) { super.setViewPart(part); fActionGroup = new NewTextSearchActionGroup(part); } @Override protected void clear() { if (fContentProvider != null) { fContentProvider.clear(); } } @Override protected void configureTableViewer(TableViewer viewer) { viewer.setUseHashlookup(true); FileLabelProvider innerLabelProvider = new FileLabelProvider(this, fCurrentSortOrder); viewer.setLabelProvider(new DecoratingFileSearchLabelProvider(innerLabelProvider)); viewer.setContentProvider(new FileTableContentProvider(this)); viewer.setComparator(new DecoratorIgnoringViewerSorter(innerLabelProvider)); fContentProvider = (IFileSearchContentProvider) viewer.getContentProvider(); addDragAdapters(viewer); } @Override protected void configureTreeViewer(TreeViewer viewer) { viewer.setUseHashlookup(true); FileLabelProvider innerLabelProvider = new FileLabelProvider(this, FileLabelProvider.SHOW_LABEL); viewer.setLabelProvider(new DecoratingFileSearchLabelProvider(innerLabelProvider)); viewer.setContentProvider(new FileTreeContentProvider(this, viewer)); viewer.setComparator(new DecoratorIgnoringViewerSorter(innerLabelProvider)); fContentProvider = (IFileSearchContentProvider) viewer.getContentProvider(); addDragAdapters(viewer); } @Override protected void elementsChanged(Object[] objects) { if (fContentProvider != null) { fContentProvider.elementsChanged(objects); } } @SuppressWarnings({ "rawtypes", "unchecked" }) @Override protected void evaluateChangedElements(Match[] matches, Set changedElements) { if (showLineMatches()) { for (int i = 0; i < matches.length; i++) { changedElements.add(((FileResourceMatch) matches[i]).getLineElement()); } } else { super.evaluateChangedElements(matches, changedElements); } } @Override protected void fillContextMenu(IMenuManager mgr) { super.fillContextMenu(mgr); addSortActions(mgr); fActionGroup.setContext(new ActionContext(getSite().getSelectionProvider().getSelection())); fActionGroup.fillContextMenu(mgr); FileSearchQuery query = (FileSearchQuery) getInput().getQuery(); if (query.getSearchString().length() > 0) { IStructuredSelection selection = (IStructuredSelection) getViewer().getSelection(); if (!selection.isEmpty()) { ReplaceAction replaceSelection = new ReplaceAction(getSite().getShell(), (FileSearchResult) getInput(), selection.toArray()); replaceSelection.setText(SearchMessages.ReplaceAction_label_selected); mgr.appendToGroup(IContextMenuConstants.GROUP_REORGANIZE, replaceSelection); } ReplaceAction replaceAll = new ReplaceAction(getSite().getShell(), (FileSearchResult) getInput(), null); replaceAll.setText(SearchMessages.ReplaceAction_label_all); mgr.appendToGroup(IContextMenuConstants.GROUP_REORGANIZE, replaceAll); } } @Override protected void handleOpen(OpenEvent event) { if (showLineMatches()) { Object firstElement = ((IStructuredSelection) event.getSelection()).getFirstElement(); if (firstElement instanceof IFile) { if (getDisplayedMatchCount(firstElement) == 0) { try { open(getSite().getPage(), (IFile) firstElement, false); } catch (PartInitException e) { ErrorDialog.openError(getSite().getShell(), SearchMessages.FileSearchPage_open_file_dialog_title, SearchMessages.FileSearchPage_open_file_failed, e.getStatus()); } return; } } if (firstElement instanceof File) { IFileStore file = EFS.getLocalFileSystem().fromLocalFile((File) firstElement); try { IDE.openEditorOnFileStore(getSite().getPage(), file); } catch (PartInitException e) { ErrorDialog.openError(getSite().getShell(), SearchMessages.FileSearchPage_open_file_dialog_title, SearchMessages.FileSearchPage_open_file_failed, e.getStatus()); } } } super.handleOpen(event); } private void addDragAdapters(StructuredViewer viewer) { Transfer[] transfers = new Transfer[] { ResourceTransfer.getInstance() }; int ops = DND.DROP_COPY | DND.DROP_LINK; viewer.addDragSupport(ops, transfers, new NavigatorDragAdapter(viewer)); } private void addSortActions(IMenuManager mgr) { if (getLayout() != FLAG_LAYOUT_FLAT) { return; } MenuManager sortMenu = new MenuManager(SearchMessages.FileSearchPage_sort_by_label); sortMenu.add(fSortByNameAction); sortMenu.add(fSortByPathAction); fSortByNameAction.setChecked(fCurrentSortOrder == fSortByNameAction.getSortOrder()); fSortByPathAction.setChecked(fCurrentSortOrder == fSortByPathAction.getSortOrder()); mgr.appendToGroup(IContextMenuConstants.GROUP_VIEWER_SETUP, sortMenu); } private boolean showLineMatches() { //TODO(pquitslund): line match presentation disabled return false; // AbstractTextSearchResult input = getInput(); // return getLayout() == FLAG_LAYOUT_TREE && input != null // && !((FileSearchQuery) input.getQuery()).isFileNameSearch(); } }