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package org.eclipse.team.internal.ui;
/*
* (c) Copyright IBM Corp. 2000, 2002.
* All Rights Reserved.
*/
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.InputDialog;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ColumnWeightData;
import org.eclipse.jface.viewers.ComboBoxCellEditor;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.ICellModifier;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ISelection;
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.TableLayout;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.TableEditor;
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.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.team.core.IFileTypeInfo;
import org.eclipse.team.core.Team;
import org.eclipse.team.internal.core.TeamPlugin;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
/**
* This preference page displays all patterns which determine whether a resource
* is to be treated as a text file or not. The page allows the user to add or
* remove entries from this table, and change their values from Text to Binary.
*/
public class TextPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
// Some string constants for display purposes
private static final String TEXT = Policy.bind("TextPreferencePage.text"); //$NON-NLS-1$
private static final String BINARY = Policy.bind("TextPreferencePage.binary"); //$NON-NLS-1$
// The name of the parameter in the file registry
private static final String TYPE = "type"; //$NON-NLS-1$
// The input for the table viewer
private List input;
// Widgets
private TableViewer viewer;
private Button removeButton;
private Button changeButton;
/**
* TableEntry is a pair of strings representing an entry in the table
*/
class TableEntry {
String ext;
String value;
public TableEntry(String ext, String value) {
this.ext = ext;
this.value = value;
}
public String getExtension() {
return ext;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
}
/**
* TableLabelProvider provides labels for TableEntrys.
*/
class TableLabelProvider extends LabelProvider implements ITableLabelProvider {
public String getColumnText(Object element, int columnIndex) {
TableEntry entry = (TableEntry)element;
switch (columnIndex) {
case 0:
return entry.getExtension();
case 1:
return entry.getValue();
default:
return null;
}
}
public Image getColumnImage(Object element, int columnIndex) {
return null;
}
};
/*
* Method declared on IWorkbenchPreferencePage
*/
public void init(IWorkbench workbench) {
}
/*
* @see PreferencePage#createControl
*/
protected Control createContents(Composite ancestor) {
noDefaultAndApplyButton();
Composite parent = new Composite(ancestor, SWT.NULL);
GridLayout layout = new GridLayout();
layout.marginWidth = 0;
layout.marginHeight = 0;
layout.numColumns = 2;
parent.setLayout(layout);
// set F1 help
//WorkbenchHelp.setHelp(parent, new DialogPageContextComputer (this, ITeamHelpContextIds.TEXT_PREFERENCE_PAGE));
Label l1 = new Label(parent, SWT.NULL);
l1.setText(Policy.bind("TextPreferencePage.description")); //$NON-NLS-1$
GridData data = new GridData(GridData.VERTICAL_ALIGN_BEGINNING);
data.horizontalSpan = 2;
l1.setLayoutData(data);
viewer = new TableViewer(parent, SWT.MULTI | SWT.FULL_SELECTION | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
Table table = viewer.getTable();
new TableEditor(table);
table.setHeaderVisible(true);
table.setLinesVisible(true);
GridData gd = new GridData(GridData.FILL_BOTH);
gd.widthHint = convertWidthInCharsToPixels(30);
table.setLayoutData(gd);
table.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event e) {
handleSelection();
}
});
// Create the table columns
new TableColumn(table, SWT.NULL);
new TableColumn(table, SWT.NULL);
TableColumn[] columns = table.getColumns();
columns[0].setText(Policy.bind("TextPreferencePage.extension")); //$NON-NLS-1$
columns[1].setText(Policy.bind("TextPreferencePage.contents")); //$NON-NLS-1$
CellEditor editor = new ComboBoxCellEditor(table, new String[] {TEXT, BINARY});
viewer.setCellEditors(new CellEditor[] {null, editor});
viewer.setColumnProperties(new String[] {"extension", "contents"}); //$NON-NLS-1$ //$NON-NLS-2$
viewer.setCellModifier(new ICellModifier() {
public Object getValue(Object element, String property) {
String value = ((TableEntry)element).getValue();
if (value.equals(TEXT)) {
return new Integer(0);
} else {
return new Integer(1);
}
}
public boolean canModify(Object element, String property) {
return true;
}
public void modify(Object element, String property, Object value) {
IStructuredSelection selection = (IStructuredSelection)viewer.getSelection();
TableEntry entry = (TableEntry)selection.getFirstElement();
if (((Integer)value).intValue() == 0) {
entry.setValue(TEXT);
} else {
entry.setValue(BINARY);
}
viewer.refresh(entry);
}
});
viewer.setLabelProvider(new TableLabelProvider());
viewer.setContentProvider(new IStructuredContentProvider() {
public void dispose() {
}
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
}
public Object[] getElements(Object inputElement) {
if (inputElement == null) return null;
return ((List)inputElement).toArray();
}
});
viewer.addDoubleClickListener(new IDoubleClickListener() {
public void doubleClick(DoubleClickEvent event) {
ISelection selection = event.getSelection();
if (selection == null || !(selection instanceof IStructuredSelection)) {
return;
}
viewer.editElement(((IStructuredSelection)selection).getFirstElement(), 1);
}
});
TableLayout tl = new TableLayout();
tl.addColumnData(new ColumnWeightData(50));
tl.addColumnData(new ColumnWeightData(50));
table.setLayout(tl);
Composite buttons = new Composite(parent, SWT.NULL);
buttons.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));
layout = new GridLayout();
layout.marginHeight = 0;
layout.marginWidth = 0;
buttons.setLayout(layout);
Button addButton = new Button(buttons, SWT.PUSH);
addButton.setText(Policy.bind("TextPreferencePage.add")); //$NON-NLS-1$
data = new GridData();
data.horizontalAlignment = GridData.FILL;
data.heightHint = convertVerticalDLUsToPixels(IDialogConstants.BUTTON_HEIGHT);
int widthHint = convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
data.widthHint = Math.max(widthHint, addButton.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
addButton.setLayoutData(data);
addButton.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event e) {
addPattern();
}
});
removeButton= new Button(buttons, SWT.PUSH);
removeButton.setText(Policy.bind("TextPreferencePage.remove")); //$NON-NLS-1$
data = new GridData();
data.horizontalAlignment = GridData.FILL;
data.heightHint = convertVerticalDLUsToPixels(IDialogConstants.BUTTON_HEIGHT);
widthHint = convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
data.widthHint = Math.max(widthHint, removeButton.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
removeButton.setLayoutData(data);
removeButton.setEnabled(false);
removeButton.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event e) {
removePattern();
}
});
changeButton = new Button(buttons, SWT.PUSH);
changeButton.setText(Policy.bind("TextPreferencePage.change")); //$NON-NLS-1$
data = new GridData();
data.horizontalAlignment = GridData.FILL;
data.heightHint = convertVerticalDLUsToPixels(IDialogConstants.BUTTON_HEIGHT);
widthHint = convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
data.widthHint = Math.max(widthHint, changeButton.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
changeButton.setLayoutData(data);
changeButton.setEnabled(false);
changeButton.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event e) {
changePattern();
}
});
fillTable();
return parent;
}
/**
* Do anything necessary because the OK button has been pressed.
*
* @return whether it is okay to close the preference page
*/
public boolean performOk() {
int size = input.size();
String[] extensions = new String[size];
int[] types = new int[size];
int i = 0;
Iterator it = input.iterator();
while (it.hasNext()) {
TableEntry entry = (TableEntry)it.next();
String value = entry.getValue();
if (value.equals(TEXT)) {
types[i] = Team.TEXT;
} else {
types[i] = Team.BINARY;
}
extensions[i] = entry.getExtension();
i++;
}
Team.setAllTypes(extensions, types);
return true;
}
/**
* Fill the table with the values from the file type registry
*/
private void fillTable() {
this.input = new ArrayList();
IFileTypeInfo[] infos = Team.getAllTypes();
for (int i = 0; i < infos.length; i++) {
IFileTypeInfo info = infos[i];
int type = info.getType();
switch (type) {
case Team.TEXT:
input.add(new TableEntry(info.getExtension(), TEXT));
break;
case Team.BINARY:
input.add(new TableEntry(info.getExtension(), BINARY));
break;
}
}
viewer.setInput(input);
}
/**
* Add a new item to the table with the default type of Text.
*/
private void addPattern() {
InputDialog dialog = new InputDialog(getShell(), Policy.bind("TextPreferencePage.enterExtensionShort"), Policy.bind("TextPreferencePage.enterExtensionLong"), null, null); //$NON-NLS-1$ //$NON-NLS-2$
dialog.open();
if (dialog.getReturnCode() != InputDialog.OK) return;
String pattern = dialog.getValue();
if (pattern.equals("")) return; //$NON-NLS-1$
// Check if the item already exists
Iterator it = input.iterator();
while (it.hasNext()) {
TableEntry entry = (TableEntry)it.next();
if (entry.getExtension().equals(pattern)) {
MessageDialog.openWarning(getShell(), Policy.bind("TextPreferencePage.extensionExistsShort"), Policy.bind("TextPreferencePage.extensionExistsLong")); //$NON-NLS-1$ //$NON-NLS-2$
return;
}
}
input.add(new TableEntry(pattern, TEXT));
viewer.refresh();
}
/**
* Remove the selected items from the table
*/
private void removePattern() {
ISelection selection = viewer.getSelection();
if (selection == null || !(selection instanceof IStructuredSelection)) {
return;
}
IStructuredSelection ss = (IStructuredSelection)selection;
Iterator it = ss.iterator();
while (it.hasNext()) {
TableEntry entry = (TableEntry)it.next();
input.remove(entry);
}
viewer.refresh();
}
/**
* Toggle the selected items' content types
*/
private void changePattern() {
ISelection selection = viewer.getSelection();
if (selection == null || !(selection instanceof IStructuredSelection)) {
return;
}
IStructuredSelection ss = (IStructuredSelection)selection;
Iterator it = ss.iterator();
while (it.hasNext()) {
TableEntry entry = (TableEntry)it.next();
String string = entry.getValue();
if (string.equals(TEXT)) {
entry.setValue(BINARY);
} else {
entry.setValue(TEXT);
}
viewer.refresh(entry);
}
}
/**
* The table viewer selection has changed. Update the remove and change button enablement.
*/
private void handleSelection() {
boolean empty = viewer.getSelection().isEmpty();
removeButton.setEnabled(!empty);
changeButton.setEnabled(!empty);
}
}
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