--- /dev/null
+package net.sourceforge.phpdt.tidy.preferences;
+
+import java.util.ArrayList;
+import java.util.StringTokenizer;
+
+import org.eclipse.jface.dialogs.IDialogConstants;
+import org.eclipse.jface.preference.FieldEditor;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.SelectionAdapter;
+import org.eclipse.swt.events.SelectionEvent;
+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.Label;
+import org.eclipse.swt.widgets.List;
+import org.eclipse.swt.widgets.Text;
+
+/**
+ * A field editor for displaying and storing a list of strings.
+ * Buttons are provided for adding items to the list and removing
+ * items from the list.
+ */
+public class AddRemoveListFieldEditor extends FieldEditor {
+ private static final String DEFAULT_ADD_LABEL = "Add";
+ private static final String DEFAULT_REMOVE_LABEL = "Remove selection";
+ private static final String DEFAULT_SEPERATOR = ";";
+
+ private static final int VERTICAL_DIALOG_UNITS_PER_CHAR = 8;
+ private static final int HORIZONTAL_DIALOG_UNITS_PER_CHAR = 4;
+ private static final int LIST_HEIGHT_IN_CHARS = 10;
+ private static final int LIST_HEIGHT_IN_DLUS =
+ LIST_HEIGHT_IN_CHARS * VERTICAL_DIALOG_UNITS_PER_CHAR;
+
+ // The top-level control for the field editor.
+ private Composite top;
+ // The list of tags.
+ private List list;
+ // The text field for inputting new tags.
+ private Text textField;
+ // The button for adding the contents of
+ // the text field to the list.
+ private Button add;
+ // The button for removing the currently-selected list item.
+ private Button remove;
+ // The string used to seperate list items
+ // in a single String representation.
+ private String seperator = DEFAULT_SEPERATOR;
+
+ public AddRemoveListFieldEditor(
+ String name,
+ String labelText,
+ Composite parent) {
+ super(name, labelText, parent);
+ }
+
+ public AddRemoveListFieldEditor(
+ String name,
+ String labelText,
+ String addButtonText,
+ String removeButtonText,
+ Composite parent) {
+ super(name, labelText, parent);
+ setAddButtonText(addButtonText);
+ setRemoveButtonText(removeButtonText);
+ }
+
+ /**
+ * @see org.eclipse.jface.preference.FieldEditor#adjustForNumColumns(int)
+ */
+ protected void adjustForNumColumns(int numColumns) {
+ ((GridData)top.getLayoutData()).horizontalSpan = numColumns;
+ }
+
+ /**
+ * @see org.eclipse.jface.preference.FieldEditor#doFillIntoGrid
+ * (Composite, int)
+ */
+ protected void doFillIntoGrid(Composite parent, int numColumns) {
+ top = parent;
+
+ GridData gd = new GridData(GridData.FILL_HORIZONTAL);
+ gd.horizontalSpan = numColumns;
+ top.setLayoutData(gd);
+
+ Label label = getLabelControl(top);
+ GridData labelData = new GridData();
+ labelData.horizontalSpan = numColumns;
+ label.setLayoutData(labelData);
+
+ list = new List(top, SWT.BORDER);
+
+ // Create a grid data that takes up the extra
+ // space in the dialog and spans both columns.
+ GridData listData = new GridData(GridData.FILL_HORIZONTAL);
+ listData.heightHint =
+ convertVerticalDLUsToPixels(list, LIST_HEIGHT_IN_DLUS);
+ listData.horizontalSpan = numColumns;
+
+ list.setLayoutData(listData);
+ list.addSelectionListener(new SelectionAdapter() {
+ public void widgetSelected(SelectionEvent e) {
+ selectionChanged();
+ }
+ });
+
+ // Create a composite for the add and remove
+ // buttons and the input text field.
+ Composite addRemoveGroup = new Composite(top, SWT.NONE);
+
+ GridData addRemoveData = new GridData(GridData.FILL_HORIZONTAL);
+ addRemoveData.horizontalSpan = numColumns;
+ addRemoveGroup.setLayoutData(addRemoveData);
+
+ GridLayout addRemoveLayout = new GridLayout();
+ addRemoveLayout.numColumns = numColumns;
+ addRemoveLayout.marginHeight = 0;
+ addRemoveLayout.marginWidth = 0;
+ addRemoveGroup.setLayout(addRemoveLayout);
+
+ // Create a composite for the add and remove buttons.
+ Composite buttonGroup = new Composite(addRemoveGroup, SWT.NONE);
+ buttonGroup.setLayoutData(new GridData());
+
+ GridLayout buttonLayout = new GridLayout();
+ buttonLayout.marginHeight = 0;
+ buttonLayout.marginWidth = 0;
+ buttonGroup.setLayout(buttonLayout);
+
+ // Create the add button.
+ add = new Button(buttonGroup, SWT.NONE);
+ add.setText(DEFAULT_ADD_LABEL);
+ add.addSelectionListener(new SelectionAdapter() {
+ public void widgetSelected(SelectionEvent e) {
+ add();
+ }
+ });
+ GridData addData = new GridData(GridData.FILL_HORIZONTAL);
+ addData.heightHint = convertVerticalDLUsToPixels(
+ add,
+ IDialogConstants.BUTTON_HEIGHT);
+ addData.widthHint = convertHorizontalDLUsToPixels(
+ add,
+ IDialogConstants.BUTTON_WIDTH);
+ add.setLayoutData(addData);
+
+ // Create the remove button.
+ remove = new Button(buttonGroup, SWT.NONE);
+ remove.setEnabled(false);
+ remove.setText(DEFAULT_REMOVE_LABEL);
+ remove.addSelectionListener(new SelectionAdapter() {
+ public void widgetSelected(SelectionEvent e) {
+ list.remove(list.getSelectionIndex());
+ selectionChanged();
+ }
+ });
+ GridData removeData = new GridData(GridData.FILL_HORIZONTAL);
+ removeData.heightHint = convertVerticalDLUsToPixels(
+ remove,
+ IDialogConstants.BUTTON_HEIGHT);
+ removeData.widthHint = convertHorizontalDLUsToPixels(
+ remove,
+ IDialogConstants.BUTTON_WIDTH);
+ remove.setLayoutData(removeData);
+
+ // Create the text field.
+ textField = new Text(addRemoveGroup, SWT.BORDER);
+
+ GridData textData = new GridData(GridData.FILL_HORIZONTAL);
+ textData.horizontalSpan = numColumns - 1;
+ textData.verticalAlignment = GridData.BEGINNING;
+ textField.setLayoutData(textData);
+ }
+
+ /**
+ * @see org.eclipse.jface.preference.FieldEditor#doLoad()
+ */
+ protected void doLoad() {
+ String items = getPreferenceStore().getString(getPreferenceName());
+ setList(items);
+ }
+
+ /**
+ * @see org.eclipse.jface.preference.FieldEditor#doLoadDefault()
+ */
+ protected void doLoadDefault() {
+ String items = getPreferenceStore().getDefaultString(getPreferenceName());
+ setList(items);
+ }
+
+ // Parses the string into seperate list items and adds them to the list.
+ private void setList(String items) {
+ String[] itemArray = parseString(items);
+ list.setItems(itemArray);
+ }
+
+ /**
+ * @see org.eclipse.jface.preference.FieldEditor#doStore()
+ */
+ protected void doStore() {
+ String s = createListString(list.getItems());
+ if (s != null)
+ getPreferenceStore().setValue(getPreferenceName(), s);
+ }
+
+ /**
+ * @see org.eclipse.jface.preference.FieldEditor#getNumberOfControls()
+ */
+ public int getNumberOfControls() {
+ // The button composite and the text field.
+ return 2;
+ }
+
+ // Adds the string in the text field to the list.
+ private void add() {
+ String tag = textField.getText();
+ if (tag != null && tag.length() > 0)
+ list.add(tag);
+ textField.setText("");
+ }
+
+ /**
+ * Sets the label for the button that adds
+ * the contents of the text field to the list.
+ */
+ public void setAddButtonText(String text) {
+ add.setText(text);
+ }
+
+ /**
+ * Sets the label for the button that removes
+ * the selected item from the list.
+ */
+ public void setRemoveButtonText(String text) {
+ remove.setText(text);
+ }
+
+ /**
+ * Sets the string that seperates items in the list when the
+ * list is stored as a single String in the preference store.
+ */
+ public void setSeperator(String seperator) {
+ this.seperator = seperator;
+ }
+
+ /**
+ * Creates the single String representation of the list
+ * that is stored in the preference store.
+ */
+ private String createListString(String[] items) {
+ StringBuffer path = new StringBuffer("");//$NON-NLS-1$
+
+ for (int i = 0; i < items.length; i++) {
+ path.append(items[i]);
+ path.append(seperator);
+ }
+ return path.toString();
+ }
+
+ /**
+ * Parses the single String representation of the list
+ * into an array of list items.
+ */
+ private String[] parseString(String stringList) {
+ StringTokenizer st =
+ new StringTokenizer(stringList, seperator); //$NON-NLS-1$
+ ArrayList v = new ArrayList();
+ while (st.hasMoreElements()) {
+ v.add(st.nextElement());
+ }
+ return (String[])v.toArray(new String[v.size()]);
+ }
+
+ // Sets the enablement of the remove button depending
+ // on the selection in the list.
+ private void selectionChanged() {
+ int index = list.getSelectionIndex();
+ remove.setEnabled(index >= 0);
+ }
+}
git://git.phpeclipse.com / phpeclipse.git / blobdiff