Java tutorial
/******************************************************************************* * Copyright (c) 2005-2008 Polarion Software. * 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: * Igor Burilo - Initial API and implementation *******************************************************************************/ package org.eclipse.team.svn.ui.composite; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ColumnPixelData; import org.eclipse.jface.viewers.ColumnWeightData; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.ICheckStateListener; import org.eclipse.jface.viewers.IDoubleClickListener; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TableLayout; import org.eclipse.jface.viewers.Viewer; 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.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableColumn; import org.eclipse.swt.widgets.Text; import org.eclipse.team.svn.core.operation.local.DiffViewerSettings; import org.eclipse.team.svn.core.operation.local.DiffViewerSettings.IDiffViewerChangeListener; import org.eclipse.team.svn.core.operation.local.DiffViewerSettings.ResourceSpecificParameterKindEnum; import org.eclipse.team.svn.core.operation.local.DiffViewerSettings.ResourceSpecificParameters; import org.eclipse.team.svn.ui.SVNUIMessages; import org.eclipse.team.svn.ui.dialog.DefaultDialog; import org.eclipse.team.svn.ui.panel.common.DiffViewerVariablesPanel; import org.eclipse.team.svn.ui.panel.common.EditFileAssociationsPanel; import org.eclipse.team.svn.ui.utility.ColumnedViewerComparator; import org.eclipse.team.svn.ui.verifier.IValidationManager; /** * * File associations for diff viewer * It associates either file extension or file mime type with external diff program * * @author Igor Burilo */ public class DiffViewerFileAssociationsComposite extends Composite { protected static final int COLUMN_CHECKBOX = 0; protected static final int COLUMN_EXTENSION = 1; protected static final int COLUMN_DIFF_PATH = 2; protected static final int COLUMN_MERGE_PATH = 3; protected IValidationManager validationManager; protected DiffViewerSettings diffSettings; protected CheckboxTableViewer tableViewer; protected Text diffParametersText; protected Text mergeParametersText; protected Button addButton; protected Button editButton; protected Button removeButton; public DiffViewerFileAssociationsComposite(Composite parent, IValidationManager validationManager) { super(parent, SWT.NONE); this.validationManager = validationManager; this.createControls(); } public void initializeControls(DiffViewerSettings diffSettings) { this.diffSettings = diffSettings; this.diffParametersText.setText(""); //$NON-NLS-1$ this.mergeParametersText.setText(""); //$NON-NLS-1$ this.tableViewer.setInput(diffSettings); //set checked ResourceSpecificParameters[] params = diffSettings.getResourceSpecificParameters(); for (ResourceSpecificParameters param : params) { this.tableViewer.setChecked(param, param.isEnabled); } } protected void createControls() { GridLayout layout = new GridLayout(); layout.marginHeight = layout.marginWidth = 0; layout.numColumns = 2; GridData data = new GridData(GridData.FILL_BOTH); this.setLayout(layout); this.setLayoutData(data); Composite tableComposite = new Composite(this, SWT.NONE); layout = new GridLayout(); layout.marginHeight = layout.marginWidth = 0; layout.numColumns = 1; data = new GridData(GridData.FILL_BOTH); tableComposite.setLayout(layout); tableComposite.setLayoutData(data); this.createFileAssociationsTable(tableComposite); this.createParametersPreview(tableComposite); this.createButtonsControls(this); this.enableButtons(); } protected void createParametersPreview(Composite parent) { //diff Group diffGroup = new Group(parent, SWT.NONE); GridLayout layout = new GridLayout(); GridData data = new GridData(GridData.FILL_HORIZONTAL); diffGroup.setLayout(layout); diffGroup.setLayoutData(data); diffGroup.setText(SVNUIMessages.DiffViewerExternalProgramComposite_DiffProgramArguments_Label); this.diffParametersText = new Text(diffGroup, SWT.BORDER | SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.WRAP); data = new GridData(GridData.FILL_HORIZONTAL); data.heightHint = DefaultDialog.convertHeightInCharsToPixels(this.diffParametersText, 5); this.diffParametersText.setLayoutData(data); this.diffParametersText.setBackground(this.diffParametersText.getBackground()); this.diffParametersText.setEditable(false); //merge Group mergeGroup = new Group(parent, SWT.NONE); layout = new GridLayout(); data = new GridData(GridData.FILL_HORIZONTAL); mergeGroup.setLayout(layout); mergeGroup.setLayoutData(data); mergeGroup.setText(SVNUIMessages.DiffViewerExternalProgramComposite_MergeProgramArguments_Label); this.mergeParametersText = new Text(mergeGroup, SWT.BORDER | SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.WRAP); data = new GridData(GridData.FILL_HORIZONTAL); data.heightHint = DefaultDialog.convertHeightInCharsToPixels(this.mergeParametersText, 5); this.mergeParametersText.setLayoutData(data); this.mergeParametersText.setBackground(this.mergeParametersText.getBackground()); this.mergeParametersText.setEditable(false); } protected void createFileAssociationsTable(Composite parent) { Table table = new Table(parent, SWT.CHECK | SWT.BORDER | SWT.FULL_SELECTION | SWT.V_SCROLL | SWT.H_SCROLL); TableLayout layout = new TableLayout(); layout.addColumnData(new ColumnPixelData(20, false)); layout.addColumnData(new ColumnWeightData(30, true)); layout.addColumnData(new ColumnWeightData(40, true)); layout.addColumnData(new ColumnWeightData(40, true)); GridData data = new GridData(GridData.FILL_BOTH); table.setLayoutData(data); table.setLayout(layout); table.setLinesVisible(true); table.setHeaderVisible(true); this.tableViewer = new CheckboxTableViewer(table); this.tableViewer.setUseHashlookup(true); //this.tableViewer.setColumnProperties(columnNames); this.tableViewer.setContentProvider(new FileAssociationsContentProvider()); this.tableViewer.setLabelProvider(new FileAssociationsLabelProvider()); ColumnedViewerComparator comparator = new FileAssociationsComparator(this.tableViewer); TableColumn column = new TableColumn(table, SWT.NONE); column.setResizable(false); column = new TableColumn(table, SWT.NONE); column.setText(SVNUIMessages.DiffViewerFileAssociationsComposite_ExtensionMimeType_Column); column.addSelectionListener(comparator); column = new TableColumn(table, SWT.NONE); column.setText(SVNUIMessages.DiffViewerFileAssociationsComposite_DiffProgramPath_Column); column.addSelectionListener(comparator); column = new TableColumn(table, SWT.NONE); column.setText(SVNUIMessages.DiffViewerFileAssociationsComposite_MergeProgramPath_Column); column.addSelectionListener(comparator); this.tableViewer.setComparator(comparator); comparator.setColumnNumber(DiffViewerFileAssociationsComposite.COLUMN_EXTENSION); this.tableViewer.getTable().setSortColumn( this.tableViewer.getTable().getColumn(DiffViewerFileAssociationsComposite.COLUMN_EXTENSION)); this.tableViewer.getTable().setSortDirection(SWT.UP); this.tableViewer.addCheckStateListener(new ICheckStateListener() { public void checkStateChanged(CheckStateChangedEvent event) { ResourceSpecificParameters param = (ResourceSpecificParameters) event.getElement(); param.isEnabled = event.getChecked(); } }); this.tableViewer.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { ResourceSpecificParameters param = getSelectedResourceSpecificParameter(); DiffViewerFileAssociationsComposite.this.editFileAssociations(param); } }); //selection listener this.tableViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { //init parameters control ResourceSpecificParameters param = DiffViewerFileAssociationsComposite.this .getSelectedResourceSpecificParameter(); if (param != null) { String diffParamsStr = param.params.diffParamatersString; diffParamsStr = diffParamsStr != null ? diffParamsStr : ""; //$NON-NLS-1$ DiffViewerFileAssociationsComposite.this.diffParametersText.setText(diffParamsStr); String mergeParamsStr = param.params.mergeParamatersString; mergeParamsStr = mergeParamsStr != null ? mergeParamsStr : ""; //$NON-NLS-1$ DiffViewerFileAssociationsComposite.this.mergeParametersText.setText(mergeParamsStr); } DiffViewerFileAssociationsComposite.this.enableButtons(); } }); } protected void enableButtons() { boolean hasSelection = this.getSelectedResourceSpecificParameter() != null; this.editButton.setEnabled(hasSelection); this.removeButton.setEnabled(hasSelection); } protected void createButtonsControls(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); layout.numColumns = 1; layout.marginWidth = layout.marginHeight = 0; GridData data = new GridData(); data.verticalAlignment = SWT.TOP; data.widthHint = 100; composite.setLayout(layout); composite.setLayoutData(data); this.addButton = new Button(composite, SWT.PUSH); data = new GridData(GridData.FILL_HORIZONTAL); data.widthHint = DefaultDialog.computeButtonWidth(this.addButton); this.addButton.setLayoutData(data); this.addButton.setText(SVNUIMessages.DiffViewerFileAssociationsComposite_Add_Button); this.editButton = new Button(composite, SWT.PUSH); data = new GridData(GridData.FILL_HORIZONTAL); data.widthHint = DefaultDialog.computeButtonWidth(this.editButton); this.editButton.setLayoutData(data); this.editButton.setText(SVNUIMessages.DiffViewerFileAssociationsComposite_Edit_Button); this.removeButton = new Button(composite, SWT.PUSH); data = new GridData(GridData.FILL_HORIZONTAL); data.widthHint = DefaultDialog.computeButtonWidth(this.removeButton); this.removeButton.setLayoutData(data); this.removeButton.setText(SVNUIMessages.DiffViewerFileAssociationsComposite_Remove_Button); Button variablesButton = new Button(composite, SWT.PUSH); data = new GridData(GridData.FILL_HORIZONTAL); data.widthHint = DefaultDialog.computeButtonWidth(variablesButton); variablesButton.setLayoutData(data); variablesButton.setText(SVNUIMessages.DiffViewerExternalProgramComposite_Variables_Button); //handlers this.addButton.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { EditFileAssociationsPanel editPanel = new EditFileAssociationsPanel(null, DiffViewerFileAssociationsComposite.this.diffSettings); DefaultDialog dialog = new DefaultDialog(DiffViewerFileAssociationsComposite.this.getShell(), editPanel); if (dialog.open() == 0) { ResourceSpecificParameters resourceParams = editPanel.getResourceSpecificParameters(); DiffViewerFileAssociationsComposite.this.diffSettings .addResourceSpecificParameters(resourceParams); } } }); this.editButton.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { ResourceSpecificParameters resourceParams = DiffViewerFileAssociationsComposite.this .getSelectedResourceSpecificParameter(); DiffViewerFileAssociationsComposite.this.editFileAssociations(resourceParams); } }); this.removeButton.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { ResourceSpecificParameters resourceParams = DiffViewerFileAssociationsComposite.this .getSelectedResourceSpecificParameter(); if (resourceParams != null) { DiffViewerFileAssociationsComposite.this.diffSettings .removeResourceSpecificParameters(resourceParams); } } }); variablesButton.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { DiffViewerVariablesPanel panel = new DiffViewerVariablesPanel(); DefaultDialog dlg = new DefaultDialog(DiffViewerFileAssociationsComposite.this.getShell(), panel); dlg.open(); } }); } protected void editFileAssociations(ResourceSpecificParameters resourceParams) { if (resourceParams != null) { EditFileAssociationsPanel editPanel = new EditFileAssociationsPanel(resourceParams, DiffViewerFileAssociationsComposite.this.diffSettings); DefaultDialog dialog = new DefaultDialog(DiffViewerFileAssociationsComposite.this.getShell(), editPanel); if (dialog.open() == 0) { resourceParams = editPanel.getResourceSpecificParameters(); DiffViewerFileAssociationsComposite.this.diffSettings .updateResourceSpecificParameters(resourceParams); } } } protected ResourceSpecificParameters getSelectedResourceSpecificParameter() { ResourceSpecificParameters resourceParams = null; ISelection sel = this.tableViewer.getSelection(); if (!sel.isEmpty() && sel instanceof IStructuredSelection) { IStructuredSelection selection = (IStructuredSelection) sel; resourceParams = (ResourceSpecificParameters) selection.getFirstElement(); } return resourceParams; } /* * Label provider for file associations table */ protected class FileAssociationsLabelProvider extends LabelProvider implements ITableLabelProvider { public String getColumnText(Object element, int columnIndex) { String res = ""; //$NON-NLS-1$ ResourceSpecificParameters param = (ResourceSpecificParameters) element; switch (columnIndex) { case DiffViewerFileAssociationsComposite.COLUMN_CHECKBOX: res = ""; //$NON-NLS-1$ break; case DiffViewerFileAssociationsComposite.COLUMN_EXTENSION: res = param.kind.formatKindValue(); break; case DiffViewerFileAssociationsComposite.COLUMN_DIFF_PATH: res = param.params.diffProgramPath; break; case DiffViewerFileAssociationsComposite.COLUMN_MERGE_PATH: res = param.params.mergeProgramPath; break; } return res; } public Image getColumnImage(Object element, int columnIndex) { return null; } } /** * File Associations table comparator * */ protected class FileAssociationsComparator extends ColumnedViewerComparator { public FileAssociationsComparator(Viewer basedOn) { super(basedOn); } public int compareImpl(Viewer viewer, Object row1, Object row2) { ResourceSpecificParameters r1 = (ResourceSpecificParameters) row1; ResourceSpecificParameters r2 = (ResourceSpecificParameters) row2; if (this.column == DiffViewerFileAssociationsComposite.COLUMN_EXTENSION) { ResourceSpecificParameterKindEnum kindEnum1 = r1.kind.kindEnum; ResourceSpecificParameterKindEnum kindEnum2 = r2.kind.kindEnum; if (kindEnum1.equals(kindEnum2)) { return ColumnedViewerComparator.compare(r1.kind.kindValue, r2.kind.kindValue); } else { return kindEnum2.compareTo(kindEnum1); } } if (this.column == DiffViewerFileAssociationsComposite.COLUMN_DIFF_PATH) { String path1 = r1.params.diffProgramPath; String path2 = r2.params.diffProgramPath; return ColumnedViewerComparator.compare(path1, path2); } if (this.column == DiffViewerFileAssociationsComposite.COLUMN_MERGE_PATH) { String path1 = r1.params.mergeProgramPath; String path2 = r2.params.mergeProgramPath; return ColumnedViewerComparator.compare(path1, path2); } return 0; } }; /* * Content provider for file associations table */ protected class FileAssociationsContentProvider implements IStructuredContentProvider, IDiffViewerChangeListener { public Object[] getElements(Object inputElement) { DiffViewerSettings diffSettings = (DiffViewerSettings) inputElement; return diffSettings.getResourceSpecificParameters(); } public void addResourceSpecificParameters(ResourceSpecificParameters params) { DiffViewerFileAssociationsComposite.this.tableViewer.add(params); DiffViewerFileAssociationsComposite.this.tableViewer.setChecked(params, params.isEnabled); } public void changeResourceSpecificParameters(ResourceSpecificParameters params) { DiffViewerFileAssociationsComposite.this.tableViewer.update(params, null); //update parametersText DiffViewerFileAssociationsComposite.this.diffParametersText.setText(params.params.diffParamatersString); DiffViewerFileAssociationsComposite.this.mergeParametersText .setText(params.params.mergeParamatersString); } public void removeResourceSpecificParameters(ResourceSpecificParameters params) { DiffViewerFileAssociationsComposite.this.tableViewer.remove(params); //clear parametersText DiffViewerFileAssociationsComposite.this.diffParametersText.setText(""); //$NON-NLS-1$ DiffViewerFileAssociationsComposite.this.mergeParametersText.setText(""); //$NON-NLS-1$ } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { if (newInput != null) { ((DiffViewerSettings) newInput).addChangeListener(this); } if (oldInput != null) { ((DiffViewerSettings) oldInput).removeChangeListener(this); } } public void dispose() { DiffViewerFileAssociationsComposite.this.diffSettings.removeChangeListener(this); } } }