Java tutorial
/******************************************************************************* * Copyright (c) 2009, 2012 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 * IBM Corporation * Marc-Andre Laperle *******************************************************************************/ package org.eclipse.cdt.codan.internal.ui.preferences; import java.text.MessageFormat; import org.eclipse.cdt.codan.core.CodanRuntime; import org.eclipse.cdt.codan.core.PreferenceConstants; import org.eclipse.cdt.codan.core.model.CodanSeverity; import org.eclipse.cdt.codan.core.model.IProblem; import org.eclipse.cdt.codan.core.model.IProblemCategory; import org.eclipse.cdt.codan.core.model.IProblemElement; import org.eclipse.cdt.codan.core.model.IProblemProfile; import org.eclipse.cdt.codan.core.model.IProblemWorkingCopy; import org.eclipse.cdt.codan.core.param.IProblemPreference; import org.eclipse.cdt.codan.core.param.LaunchModeProblemPreference; import org.eclipse.cdt.codan.core.param.RootProblemPreference; import org.eclipse.cdt.codan.internal.core.CodanPreferencesLoader; import org.eclipse.cdt.codan.internal.ui.CodanUIActivator; import org.eclipse.cdt.codan.internal.ui.CodanUIMessages; import org.eclipse.cdt.codan.internal.ui.ImageConstants; import org.eclipse.core.resources.IMarker; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.ColumnViewerToolTipSupport; import org.eclipse.jface.viewers.ComboBoxCellEditor; import org.eclipse.jface.viewers.EditingSupport; import org.eclipse.jface.viewers.ICheckStateProvider; import org.eclipse.jface.viewers.IContentProvider; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.TreeViewerColumn; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.window.ToolTip; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.widgets.Composite; public class ProblemsTreeEditor extends CheckedTreeEditor { private static final String EMPTY_STRING = ""; //$NON-NLS-1$ private static final String SINGLE_PLACEHOLDER_ONLY = "{0}"; //$NON-NLS-1$ private CodanPreferencesLoader codanPreferencesLoader = new CodanPreferencesLoader(); public ProblemsTreeEditor() { super(); } class ProblemsCheckStateProvider implements ICheckStateProvider { /* * (non-Javadoc) * * @see * org.eclipse.jface.viewers.ICheckStateProvider#isChecked(java.lang * .Object) */ @Override public boolean isChecked(Object element) { if (element instanceof IProblem) { IProblem p = (IProblem) element; return p.isEnabled(); } if (element instanceof IProblemCategory) { // checked if at least one is checked (buy grayed) IProblemCategory p = (IProblemCategory) element; Object[] children = p.getChildren(); for (int i = 0; i < children.length; i++) { Object object = children[i]; if (isChecked(object)) { return true; } } } return false; } /* * (non-Javadoc) * * @see * org.eclipse.jface.viewers.ICheckStateProvider#isGrayed(java.lang. * Object) */ @Override public boolean isGrayed(Object element) { if (element instanceof IProblem) { IProblem p = (IProblem) element; IProblemPreference preference = p.getPreference(); if (preference instanceof RootProblemPreference) { LaunchModeProblemPreference pref = ((RootProblemPreference) preference) .getLaunchModePreference(); if (pref == null) { return false; } boolean enabled = p.isEnabled(); boolean match = pref.isAllEnabled(); if (enabled && match) return false; if (!enabled && pref.isAllDisabled()) return false; return true; } return false; } if (element instanceof IProblemCategory) { // checked if at least one is checked (buy grayed) IProblemCategory p = (IProblemCategory) element; Object[] children = p.getChildren(); boolean all_checked = true; boolean all_unchecked = true; for (int i = 0; i < children.length; i++) { Object object = children[i]; if (isChecked(object)) { all_unchecked = false; } else { all_checked = false; } } if (all_checked || all_unchecked) return false; return true; } return false; } } class ProblemsContentProvider implements IContentProvider, ITreeContentProvider { @Override public void dispose() { } @Override public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } @Override public Object[] getChildren(Object parentElement) { if (parentElement instanceof Object[]) return (Object[]) parentElement; if (parentElement instanceof IProblemCategory) { return ((IProblemCategory) parentElement).getChildren(); } if (parentElement instanceof IProblemProfile) { return ((IProblemProfile) parentElement).getRoot().getChildren(); } return new Object[0]; } @Override public Object getParent(Object element) { return null; } @Override public boolean hasChildren(Object element) { return getChildren(element).length > 0; } @Override public Object[] getElements(Object inputElement) { return getChildren(inputElement); } } @Override public void checkStateChanged(CheckStateChangedEvent event) { Object element = event.getElement(); if (element instanceof IProblemWorkingCopy) { ((IProblemWorkingCopy) element).setEnabled(event.getChecked()); } else if (element instanceof IProblemCategory) { IProblemCategory cat = (IProblemCategory) element; IProblemElement[] children = cat.getChildren(); for (int i = 0; i < children.length; i++) { IProblemElement pe = children[i]; checkStateChanged(new CheckStateChangedEvent(getTreeViewer(), pe, event.getChecked())); } } getTreeViewer().refresh(); } public ProblemsTreeEditor(Composite parent, IProblemProfile profile) { super(PreferenceConstants.P_PROBLEMS, CodanUIMessages.ProblemsTreeEditor_Problems, parent); setEmptySelectionAllowed(true); getTreeViewer().getTree().setHeaderVisible(true); // getTreeViewer().getTree(). getTreeViewer().setContentProvider(new ProblemsContentProvider()); getTreeViewer().setCheckStateProvider(new ProblemsCheckStateProvider()); //getTreeViewer().getTree(). ColumnViewerToolTipSupport.enableFor(getTreeViewer(), ToolTip.RECREATE); // column Name TreeViewerColumn column1 = new TreeViewerColumn(getTreeViewer(), SWT.NONE); column1.getColumn().setWidth(300); column1.getColumn().setText(CodanUIMessages.ProblemsTreeEditor_NameColumn); column1.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof IProblem) { IProblem p = (IProblem) element; return p.getName(); } if (element instanceof IProblemCategory) { IProblemCategory p = (IProblemCategory) element; return p.getName(); } return null; } @Override public boolean useNativeToolTip(Object object) { return true; } @Override public String getToolTipText(Object element) { if (element instanceof IProblem) { IProblem p = (IProblem) element; String sampleMessage = getSampleMessage(p); int wrapLen = sampleMessage.length(); if (wrapLen < 60) wrapLen = 60; if (wrapLen > 100) wrapLen = 100; String toolTip = ""; //$NON-NLS-1$ String description = p.getDescription(); if (description != null) { toolTip = wrapText(description, wrapLen); toolTip += "\n\n"; //$NON-NLS-1$ } toolTip += CodanUIMessages.ProblemsTreeEditor_ToolTip; toolTip += "\n "; //$NON-NLS-1$ toolTip += wrapText(sampleMessage, wrapLen); return toolTip; } return super.getToolTipText(element); } private String wrapText(String description, int i) { String result = ""; //$NON-NLS-1$ while (description.length() > i) { int k = description.lastIndexOf(' ', i); if (k < 0) k = i; result += description.substring(0, k); result += '\n'; description = description.substring(k); } return result + description; } }); // column Severity TreeViewerColumn column2 = new TreeViewerColumn(getTreeViewer(), SWT.NONE); column2.getColumn().setWidth(100); column2.getColumn().setText(CodanUIMessages.ProblemsTreeEditor_SeverityColumn); column2.setLabelProvider(new ColumnLabelProvider() { @Override public Image getImage(Object element) { if (element instanceof IProblem) { IProblem p = (IProblem) element; switch (p.getSeverity().intValue()) { case IMarker.SEVERITY_INFO: return CodanUIActivator.getDefault().getImage(ImageConstants.ICON_INFO); case IMarker.SEVERITY_WARNING: return CodanUIActivator.getDefault().getImage(ImageConstants.ICON_WARNING); case IMarker.SEVERITY_ERROR: return CodanUIActivator.getDefault().getImage(ImageConstants.ICON_ERROR); } } return null; } @Override public String getText(Object element) { if (element instanceof IProblem) { IProblem p = (IProblem) element; return p.getSeverity().toTranslatableString(); } return null; } }); column2.setEditingSupport(new EditingSupport(getTreeViewer()) { @Override protected boolean canEdit(Object element) { return element instanceof IProblem; } @Override protected CellEditor getCellEditor(Object element) { return new ComboBoxCellEditor(getTreeViewer().getTree(), CodanSeverity.stringValues()); } @Override protected Object getValue(Object element) { return ((IProblem) element).getSeverity().intValue(); } @Override protected void setValue(Object element, Object value) { int index = ((Integer) value).intValue(); CodanSeverity val = CodanSeverity.values()[index]; ((IProblemWorkingCopy) element).setSeverity(val); getTreeViewer().update(element, null); } }); getTreeViewer().setAutoExpandLevel(2); codanPreferencesLoader.setInput(profile); getViewer().setInput(profile); } @Override protected void doLoad() { if (getTreeControl() != null) { IProblem[] probs = codanPreferencesLoader.getProblems(); for (int i = 0; i < probs.length; i++) { String id = probs[i].getId(); String s = getPreferenceStore().getString(id); if (s == null || s.length() == 0) { s = codanPreferencesLoader.getProperty(id); } codanPreferencesLoader.setProperty(id, s); } getViewer().setInput(codanPreferencesLoader.getInput()); } } @Override protected void doLoadDefault() { if (getTreeControl() != null) { CodanPreferencesLoader defaultPreferences = new CodanPreferencesLoader( CodanRuntime.getInstance().getCheckersRegistry().getDefaultProfile()); IProblem[] probs = codanPreferencesLoader.getProblems(); for (int i = 0; i < probs.length; i++) { String id = probs[i].getId(); String s = getPreferenceStore().getDefaultString(id); if (s == null || s.length() == 0) { s = defaultPreferences.getProperty(id); } codanPreferencesLoader.setProperty(id, s); } getViewer().setInput(codanPreferencesLoader.getInput()); setPresentsDefaultValue(true); } } @Override protected void doStore() { codanPreferencesLoader.setInput((IProblemProfile) getViewer().getInput()); IProblem[] probs = codanPreferencesLoader.getProblems(); for (int i = 0; i < probs.length; i++) { String id = probs[i].getId(); String s = codanPreferencesLoader.getProperty(id); getPreferenceStore().setValue(id, s); String params = codanPreferencesLoader.getPreferencesString(id); if (params != null) getPreferenceStore().setValue(codanPreferencesLoader.getPreferencesKey(id), params); } } @Override protected Object modelFromString(String s) { return codanPreferencesLoader.getInput(); } @Override protected String modelToString(Object model) { return ""; //$NON-NLS-1$ } public static String getSampleMessage(IProblem problem) { String messagePattern = problem.getMessagePattern(); String message = CodanUIMessages.CodanPreferencePage_NoInfo; if (SINGLE_PLACEHOLDER_ONLY.equals(messagePattern)) { message = EMPTY_STRING; } else if (messagePattern != null) { message = MessageFormat.format(messagePattern, "X", "Y", "Z"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ } return message; } }