Java tutorial
/******************************************************************************* * Copyright (c) 2010 Alena Laskavaia 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: * Alena Laskavaia - initial API and implementation *******************************************************************************/ package org.eclipse.cdt.codan.internal.ui.preferences; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import org.eclipse.cdt.codan.core.param.FileScopeProblemPreference; import org.eclipse.cdt.codan.internal.ui.CodanUIMessages; import org.eclipse.cdt.codan.internal.ui.dialogs.ExclusionInclusionEntryDialog; import org.eclipse.cdt.codan.internal.ui.widgets.BasicElementLabels; import org.eclipse.cdt.internal.ui.wizards.dialogfields.DialogField; import org.eclipse.cdt.internal.ui.wizards.dialogfields.IDialogFieldListener; import org.eclipse.cdt.internal.ui.wizards.dialogfields.IListAdapter; import org.eclipse.cdt.internal.ui.wizards.dialogfields.LayoutUtil; import org.eclipse.cdt.internal.ui.wizards.dialogfields.ListDialogField; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.IWorkspaceRoot; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.Path; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.preference.PreferencePage; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.jface.window.Window; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; public class FileScopePreferencePage extends PreferencePage { private ListDialogField<String> fInclusionPatternList; private ListDialogField<String> fExclusionPatternList; private FileScopeProblemPreference fCurrElement; private IProject fCurrProject; private IContainer fCurrSourceFolder; private static final int IDX_ADD = 0; private static final int IDX_ADD_MULTIPLE = 1; private static final int IDX_EDIT = 2; private static final int IDX_REMOVE = 4; public FileScopePreferencePage(FileScopeProblemPreference entryToEdit) { setTitle(CodanUIMessages.ExclusionInclusionDialog_title); setDescription(CodanUIMessages.ExclusionInclusionDialog_description2); fCurrElement = entryToEdit; fCurrProject = entryToEdit.getProject(); IWorkspaceRoot root = fCurrProject != null ? fCurrProject.getWorkspace().getRoot() : ResourcesPlugin.getWorkspace().getRoot(); IResource res = root.findMember(entryToEdit.getPath()); if (res instanceof IContainer) { fCurrSourceFolder = (IContainer) res; } if (res == null) fCurrSourceFolder = root; String excLabel = CodanUIMessages.ExclusionInclusionDialog_exclusion_pattern_label; // ImageDescriptor excDescriptor = null; //JavaPluginImages.DESC_OBJS_EXCLUSION_FILTER_ATTRIB; String[] excButtonLabels = new String[] { CodanUIMessages.ExclusionInclusionDialog_exclusion_pattern_add, CodanUIMessages.ExclusionInclusionDialog_exclusion_pattern_add_multiple, CodanUIMessages.ExclusionInclusionDialog_exclusion_pattern_edit, null, CodanUIMessages.ExclusionInclusionDialog_exclusion_pattern_remove }; String incLabel = CodanUIMessages.ExclusionInclusionDialog_inclusion_pattern_label; // ImageDescriptor incDescriptor = null; //JavaPluginImages.DESC_OBJS_INCLUSION_FILTER_ATTRIB; String[] incButtonLabels = new String[] { CodanUIMessages.ExclusionInclusionDialog_inclusion_pattern_add, CodanUIMessages.ExclusionInclusionDialog_inclusion_pattern_add_multiple, CodanUIMessages.ExclusionInclusionDialog_inclusion_pattern_edit, null, CodanUIMessages.ExclusionInclusionDialog_inclusion_pattern_remove }; fExclusionPatternList = createListContents(entryToEdit, FileScopeProblemPreference.EXCLUSION, excLabel, null, excButtonLabels); fInclusionPatternList = createListContents(entryToEdit, FileScopeProblemPreference.INCLUSION, incLabel, null, incButtonLabels); } @Override protected Control createContents(Composite parent) { Composite inner = new Composite(parent, SWT.NONE); inner.setFont(parent.getFont()); GridLayout layout = new GridLayout(); layout.marginHeight = 0; layout.marginWidth = 0; layout.numColumns = 2; inner.setLayout(layout); inner.setLayoutData(new GridData(GridData.FILL_BOTH)); fInclusionPatternList.doFillIntoGrid(inner, 3); LayoutUtil.setHorizontalSpan(fInclusionPatternList.getLabelControl(null), 2); LayoutUtil.setHorizontalGrabbing(fInclusionPatternList.getListControl(null), true); fExclusionPatternList.doFillIntoGrid(inner, 3); LayoutUtil.setHorizontalSpan(fExclusionPatternList.getLabelControl(null), 2); LayoutUtil.setHorizontalGrabbing(fExclusionPatternList.getListControl(null), true); setControl(inner); Dialog.applyDialogFont(inner); return inner; } private static class ExclusionInclusionLabelProvider extends LabelProvider { public ExclusionInclusionLabelProvider(String descriptorPath) { } @Override public Image getImage(Object element) { return null; } @Override public String getText(Object element) { return BasicElementLabels.getFilePattern((String) element); } } private ListDialogField<String> createListContents(FileScopeProblemPreference entryToEdit, String key, String label, String descriptor, String[] buttonLabels) { ExclusionPatternAdapter adapter = new ExclusionPatternAdapter(); ListDialogField<String> patternList = new ListDialogField<String>(adapter, buttonLabels, new ExclusionInclusionLabelProvider(descriptor)); patternList.setDialogFieldListener(adapter); patternList.setLabelText(label); patternList.enableButton(IDX_EDIT, false); IPath[] pattern = entryToEdit.getAttribute(key); ArrayList<String> elements = new ArrayList<String>(pattern.length); for (int i = 0; i < pattern.length; i++) { String patternName = pattern[i].toString(); if (patternName.length() > 0) elements.add(patternName); } patternList.setElements(elements); patternList.selectFirstElement(); patternList.enableButton(IDX_ADD_MULTIPLE, fCurrSourceFolder != null); patternList.setViewerComparator(new ViewerComparator()); return patternList; } protected void doCustomButtonPressed(ListDialogField<String> field, int index) { if (index == IDX_ADD) { addEntry(field); } else if (index == IDX_EDIT) { editEntry(field); } else if (index == IDX_ADD_MULTIPLE) { addMultipleEntries(field); } else if (index == IDX_REMOVE) { field.removeElements(field.getSelectedElements()); } updateStatus(); } private void updateStatus() { fCurrElement.setAttribute(FileScopeProblemPreference.INCLUSION, getInclusionPattern()); fCurrElement.setAttribute(FileScopeProblemPreference.EXCLUSION, getExclusionPattern()); } protected void doDoubleClicked(ListDialogField<String> field) { editEntry(field); updateStatus(); } protected void doSelectionChanged(ListDialogField<String> field) { List<String> selected = field.getSelectedElements(); field.enableButton(IDX_EDIT, canEdit(selected)); } private boolean canEdit(List<String> selected) { return selected.size() == 1; } private void editEntry(ListDialogField<String> field) { List<String> selElements = field.getSelectedElements(); if (selElements.size() != 1) { return; } List<String> existing = field.getElements(); String entry = selElements.get(0); ExclusionInclusionEntryDialog dialog = new ExclusionInclusionEntryDialog(getShell(), isExclusion(field), entry, existing, fCurrElement); if (dialog.open() == Window.OK) { field.replaceElement(entry, dialog.getExclusionPattern()); } } private boolean isExclusion(ListDialogField<String> field) { return field == fExclusionPatternList; } private void addEntry(ListDialogField<String> field) { List<String> existing = field.getElements(); ExclusionInclusionEntryDialog dialog = new ExclusionInclusionEntryDialog(getShell(), isExclusion(field), null, existing, fCurrElement); if (dialog.open() == Window.OK) { field.addElement(dialog.getExclusionPattern()); } } // -------- ExclusionPatternAdapter -------- private class ExclusionPatternAdapter implements IListAdapter<String>, IDialogFieldListener { /** * @see org.eclipse.jdt.internal.ui.wizards.dialogfields.IListAdapter#customButtonPressed(org.eclipse.jdt.internal.ui.wizards.dialogfields.ListDialogField, * int) */ @Override public void customButtonPressed(ListDialogField<String> field, int index) { doCustomButtonPressed(field, index); } /** * @see org.eclipse.jdt.internal.ui.wizards.dialogfields.IListAdapter#selectionChanged(org.eclipse.jdt.internal.ui.wizards.dialogfields.ListDialogField) */ @Override public void selectionChanged(ListDialogField<String> field) { doSelectionChanged(field); } /** * @see org.eclipse.jdt.internal.ui.wizards.dialogfields.IListAdapter#doubleClicked(org.eclipse.jdt.internal.ui.wizards.dialogfields.ListDialogField) */ @Override public void doubleClicked(ListDialogField<String> field) { doDoubleClicked(field); } /** * @see org.eclipse.jdt.internal.ui.wizards.dialogfields.IDialogFieldListener#dialogFieldChanged(org.eclipse.jdt.internal.ui.wizards.dialogfields.DialogField) */ @Override public void dialogFieldChanged(DialogField field) { } } protected void doStatusLineUpdate() { } protected void checkIfPatternValid() { } private IPath[] getPattern(ListDialogField<String> field) { Object[] arr = field.getElements().toArray(); Arrays.sort(arr); IPath[] res = new IPath[arr.length]; for (int i = 0; i < res.length; i++) { res[i] = new Path((String) arr[i]); } return res; } public IPath[] getExclusionPattern() { return getPattern(fExclusionPatternList); } public IPath[] getInclusionPattern() { return getPattern(fInclusionPatternList); } private void addMultipleEntries(ListDialogField<String> field) { String title, message; if (isExclusion(field)) { title = CodanUIMessages.ExclusionInclusionDialog_ChooseExclusionPattern_title; message = CodanUIMessages.ExclusionInclusionDialog_ChooseExclusionPattern_description; } else { title = CodanUIMessages.ExclusionInclusionDialog_ChooseInclusionPattern_title; message = CodanUIMessages.ExclusionInclusionDialog_ChooseInclusionPattern_description; } IPath[] res = ExclusionInclusionEntryDialog.chooseExclusionPattern(getShell(), fCurrSourceFolder, title, message, null, true); if (res != null) { for (int i = 0; i < res.length; i++) { field.addElement(res[i].toString()); } } } @Override public void noDefaultAndApplyButton() { super.noDefaultAndApplyButton(); } }