+++ /dev/null
-package org.simantics.district.imports.ui.controls;
-
-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.events.SelectionListener;
-import org.eclipse.swt.layout.GridData;
-import org.eclipse.swt.widgets.Combo;
-import org.eclipse.swt.widgets.Composite;
-import org.eclipse.swt.widgets.Control;
-
-/**
- * A field editor for a combo box that allows the drop-down selection of one of
- * a list of items.
- *
- * @since 3.3
- */
-public class DynamicComboFieldEditor extends FieldEditor {
-
- /**
- * The <code>Combo</code> widget.
- */
- private Combo fCombo;
-
- /**
- * The value (not the name) of the currently selected item in the Combo widget.
- */
- private String fValue;
-
- /**
- * The names (labels) and underlying values to populate the combo widget. These should be
- * arranged as: { {name1, value1}, {name2, value2}, ...}
- */
- private String[][] fEntryNamesAndValues;
-
- /**
- * Create the combo box field editor.
- *
- * @param name the name of the preference this field editor works on
- * @param labelText the label text of the field editor
- * @param entryNamesAndValues the names (labels) and underlying values to populate the combo widget. These should be
- * arranged as: { {name1, value1}, {name2, value2}, ...}
- * @param parent the parent composite
- */
-
- public DynamicComboFieldEditor(String name, String labelText, Composite parent) {
- init(name, labelText);
- createControl(parent);
- }
-
- public DynamicComboFieldEditor(String name, String labelText, String[][] entryNamesAndValues, Composite parent) {
- init(name, labelText);
- fEntryNamesAndValues = entryNamesAndValues;
- createControl(parent);
- }
-
- public void updateCombo(String[][] fEntryNamesAndValues) {
- this.fEntryNamesAndValues = fEntryNamesAndValues;
- updateComboBoxControl();
- }
-
- /**
- * Checks whether given <code>String[][]</code> is of "type"
- * <code>String[][2]</code>.
- *
- * @return <code>true</code> if it is ok, and <code>false</code> otherwise
- */
- @SuppressWarnings("unused")
- private boolean checkArray(String[][] table) {
- if (table == null) {
- return false;
- }
- for (int i = 0; i < table.length; i++) {
- String[] array = table[i];
- if (array == null || array.length != 2) {
- return false;
- }
- }
- return true;
- }
-
- @Override
- protected void adjustForNumColumns(int numColumns) {
- if (numColumns > 1) {
- Control control = getLabelControl();
- int left = numColumns;
- if (control != null) {
- ((GridData)control.getLayoutData()).horizontalSpan = 1;
- left = left - 1;
- }
- ((GridData)fCombo.getLayoutData()).horizontalSpan = left;
- } else {
- Control control = getLabelControl();
- if (control != null) {
- ((GridData)control.getLayoutData()).horizontalSpan = 1;
- }
- ((GridData)fCombo.getLayoutData()).horizontalSpan = 1;
- }
- }
-
- @Override
- protected void doFillIntoGrid(Composite parent, int numColumns) {
- int comboC = 1;
- if (numColumns > 1) {
- comboC = numColumns - 1;
- }
- Control control = getLabelControl(parent);
- GridData gd = new GridData();
- gd.horizontalSpan = 1;
- control.setLayoutData(gd);
- control = getComboBoxControl(parent);
- gd = new GridData();
- gd.horizontalSpan = comboC;
- gd.horizontalAlignment = GridData.FILL;
- control.setLayoutData(gd);
- control.setFont(parent.getFont());
- }
-
- @Override
- protected void doLoad() {
- updateComboForValue(getPreferenceStore().getString(getPreferenceName()));
- }
-
- @Override
- protected void doLoadDefault() {
- updateComboForValue(getPreferenceStore().getDefaultString(getPreferenceName()));
- }
-
- @Override
- protected void doStore() {
- if (fValue == null) {
- getPreferenceStore().setToDefault(getPreferenceName());
- return;
- }
- getPreferenceStore().setValue(getPreferenceName(), fValue);
- }
-
- @Override
- public int getNumberOfControls() {
- return 2;
- }
-
- /*
- * Lazily create and return the Combo control.
- */
- private Combo getComboBoxControl(Composite parent) {
- if (fCombo == null) {
- fCombo = new Combo(parent, SWT.READ_ONLY);
- fCombo.setFont(parent.getFont());
-
- fCombo.addSelectionListener(new SelectionAdapter() {
- @Override
- public void widgetSelected(SelectionEvent evt) {
- String oldValue = fValue;
- String name = fCombo.getText();
- fValue = getValueForName(name);
- setPresentsDefaultValue(false);
- fireValueChanged(VALUE, oldValue, fValue);
- }
- });
- }
- updateComboBoxControl();
- return fCombo;
- }
-
- private void updateComboBoxControl() {
- fCombo.removeAll();
- if (fEntryNamesAndValues != null) {
- for (int i = 0; i < fEntryNamesAndValues.length; i++) {
- fCombo.add(fEntryNamesAndValues[i][0], i);
- }
- }
- }
-
- /*
- * Given the name (label) of an entry, return the corresponding value.
- */
- private String getValueForName(String name) {
- for (int i = 0; i < fEntryNamesAndValues.length; i++) {
- String[] entry = fEntryNamesAndValues[i];
- if (name.equals(entry[0])) {
- return entry[1];
- }
- }
- return fEntryNamesAndValues[0][0];
- }
-
- /*
- * Set the name in the combo widget to match the specified value.
- */
- private void updateComboForValue(String value) {
- fValue = value;
- for (int i = 0; i < fEntryNamesAndValues.length; i++) {
- if (value.equals(fEntryNamesAndValues[i][1])) {
- fCombo.setText(fEntryNamesAndValues[i][0]);
- return;
- }
- }
- if (fEntryNamesAndValues.length > 0) {
- fValue = fEntryNamesAndValues[0][1];
- fCombo.setText(fEntryNamesAndValues[0][0]);
- }
- }
-
- @Override
- public void setEnabled(boolean enabled, Composite parent) {
- super.setEnabled(enabled, parent);
- getComboBoxControl(parent).setEnabled(enabled);
- }
-
- public void addComboListener(SelectionListener selectionListener) {
- fCombo.addSelectionListener(selectionListener);
- }
-
- public String getValue() {
- return fValue;
- }
-}
Code Review / simantics / district.git / blobdiff