Mercurial > projects > dwt2
view org.eclipse.jface/src/org/eclipse/jface/preference/BooleanFieldEditor.d @ 125:c43718956f21 default tip
Updated the snippets status.
author | Jacob Carlborg <doob@me.com> |
---|---|
date | Thu, 11 Aug 2011 19:55:14 +0200 |
parents | bc29606a740c |
children |
line wrap: on
line source
/******************************************************************************* * Copyright (c) 2000, 2006 IBM Corporation 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: * IBM Corporation - initial API and implementation * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module org.eclipse.jface.preference.BooleanFieldEditor; import org.eclipse.jface.preference.FieldEditor; import org.eclipse.swt.SWT; import org.eclipse.swt.events.DisposeEvent; import org.eclipse.swt.events.DisposeListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import java.lang.all; import java.util.Set; /** * A field editor for a bool type preference. */ public class BooleanFieldEditor : FieldEditor { /** * Style constant (value <code>0</code>) indicating the default * layout where the field editor's check box appears to the left * of the label. */ public static const int DEFAULT = 0; /** * Style constant (value <code>1</code>) indicating a layout * where the field editor's label appears on the left * with a check box on the right. */ public static const int SEPARATE_LABEL = 1; /** * Style bits. Either <code>DEFAULT</code> or * <code>SEPARATE_LABEL</code>. */ private int style; /** * The previously selected, or "before", value. */ private bool wasSelected; /** * The checkbox control, or <code>null</code> if none. */ private Button checkBox = null; /** * Creates a new bool field editor */ protected this() { } /** * Creates a bool field editor in the given style. * * @param name the name of the preference this field editor works on * @param labelText the label text of the field editor * @param style the style, either <code>DEFAULT</code> or * <code>SEPARATE_LABEL</code> * @param parent the parent of the field editor's control * @see #DEFAULT * @see #SEPARATE_LABEL */ public this(String name, String labelText, int style, Composite parent) { init(name, labelText); this.style = style; createControl(parent); } /** * Creates a bool field editor in the default style. * * @param name the name of the preference this field editor works on * @param label the label text of the field editor * @param parent the parent of the field editor's control */ public this(String name, String label, Composite parent) { this(name, label, DEFAULT, parent); } /* (non-Javadoc) * Method declared on FieldEditor. */ protected override void adjustForNumColumns(int numColumns) { if (style is SEPARATE_LABEL) { numColumns--; } (cast(GridData) checkBox.getLayoutData()).horizontalSpan = numColumns; } /* (non-Javadoc) * Method declared on FieldEditor. */ protected override void doFillIntoGrid(Composite parent, int numColumns) { String text = getLabelText(); switch (style) { case SEPARATE_LABEL: getLabelControl(parent); numColumns--; text = null; default: checkBox = getChangeControl(parent); GridData gd = new GridData(); gd.horizontalSpan = numColumns; checkBox.setLayoutData(gd); if (text !is null) { checkBox.setText(text); } } } /* (non-Javadoc) * Method declared on FieldEditor. * Loads the value from the preference store and sets it to * the check box. */ protected override void doLoad() { if (checkBox !is null) { bool value = getPreferenceStore() .getBoolean(getPreferenceName()); checkBox.setSelection(value); wasSelected = value; } } /* (non-Javadoc) * Method declared on FieldEditor. * Loads the default value from the preference store and sets it to * the check box. */ protected override void doLoadDefault() { if (checkBox !is null) { bool value = getPreferenceStore().getDefaultBoolean( getPreferenceName()); checkBox.setSelection(value); wasSelected = value; } } /* (non-Javadoc) * Method declared on FieldEditor. */ protected override void doStore() { getPreferenceStore().setValue(getPreferenceName(), checkBox.getSelection()); } /** * Returns this field editor's current value. * * @return the value */ public bool getBooleanValue() { return checkBox.getSelection(); } /** * Returns the change button for this field editor. * @param parent The Composite to create the receiver in. * * @return the change button */ protected Button getChangeControl(Composite parent) { if (checkBox is null) { checkBox = new Button(parent, SWT.CHECK | SWT.LEFT); checkBox.setFont(parent.getFont()); checkBox.addSelectionListener(new class SelectionAdapter { public void widgetSelected(SelectionEvent e) { bool isSelected = checkBox.getSelection(); valueChanged(wasSelected, isSelected); wasSelected = isSelected; } }); checkBox.addDisposeListener(new class DisposeListener { public void widgetDisposed(DisposeEvent event) { checkBox = null; } }); } else { checkParent(checkBox, parent); } return checkBox; } /* (non-Javadoc) * Method declared on FieldEditor. */ public override int getNumberOfControls() { switch (style) { case SEPARATE_LABEL: return 2; default: return 1; } } /* (non-Javadoc) * Method declared on FieldEditor. */ public override void setFocus() { if (checkBox !is null) { checkBox.setFocus(); } } /* (non-Javadoc) * Method declared on FieldEditor. */ public override void setLabelText(String text) { super.setLabelText(text); Label label = getLabelControl(); if (label is null && checkBox !is null) { checkBox.setText(text); } } /** * Informs this field editor's listener, if it has one, about a change * to the value (<code>VALUE</code> property) provided that the old and * new values are different. * * @param oldValue the old value * @param newValue the new value */ protected void valueChanged(bool oldValue, bool newValue) { setPresentsDefaultValue(false); if (oldValue !is newValue) { fireStateChanged(VALUE, oldValue, newValue); } } /* * @see FieldEditor.setEnabled */ public override void setEnabled(bool enabled, Composite parent) { //Only call super if there is a label already if (style is SEPARATE_LABEL) { super.setEnabled(enabled, parent); } getChangeControl(parent).setEnabled(enabled); } }