Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2017 IBM Corporation and others. * * This program and the accompanying materials * are made available under the terms of the Eclipse Public License 2.0 * which accompanies this distribution, and is available at * https://www.eclipse.org/legal/epl-2.0/ * * SPDX-License-Identifier: EPL-2.0 * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.swt.examples.controlexample; import static org.eclipse.swt.events.SelectionListener.widgetSelectedAdapter; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ControlListener; 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.Group; import org.eclipse.swt.widgets.TabFolder; import org.eclipse.swt.widgets.ToolTip; import org.eclipse.swt.widgets.Tray; import org.eclipse.swt.widgets.TrayItem; import org.eclipse.swt.widgets.Widget; class ToolTipTab extends Tab { /* Example widgets and groups that contain them */ ToolTip toolTip1; Group toolTipGroup; /* Style widgets added to the "Style" group */ Button balloonButton, iconErrorButton, iconInformationButton, iconWarningButton, noIconButton; /* Other widgets added to the "Other" group */ Button autoHideButton, showInTrayButton; Tray tray; TrayItem trayItem; /** * Creates the Tab within a given instance of ControlExample. */ ToolTipTab(ControlExample instance) { super(instance); } /** * Creates the "Example" group. */ @Override void createExampleGroup() { super.createExampleGroup(); /* Create a group for the tooltip visibility check box */ toolTipGroup = new Group(exampleGroup, SWT.NONE); toolTipGroup.setLayout(new GridLayout()); toolTipGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); toolTipGroup.setText("ToolTip"); visibleButton = new Button(toolTipGroup, SWT.CHECK); visibleButton.setText(ControlExample.getResourceString("Visible")); visibleButton.addSelectionListener(widgetSelectedAdapter(event -> setExampleWidgetVisibility())); } /** * Creates the "Example" widgets. */ @Override void createExampleWidgets() { /* Compute the widget style */ int style = getDefaultStyle(); if (balloonButton.getSelection()) style |= SWT.BALLOON; if (iconErrorButton.getSelection()) style |= SWT.ICON_ERROR; if (iconInformationButton.getSelection()) style |= SWT.ICON_INFORMATION; if (iconWarningButton.getSelection()) style |= SWT.ICON_WARNING; /* Create the example widgets */ toolTip1 = new ToolTip(shell, style); toolTip1.setText(ControlExample.getResourceString("ToolTip_Title")); toolTip1.setMessage(ControlExample.getResourceString("Example_string")); } /** * Creates the tab folder page. * * @param tabFolder org.eclipse.swt.widgets.TabFolder * @return the new page for the tab folder */ @Override Composite createTabFolderPage(TabFolder tabFolder) { super.createTabFolderPage(tabFolder); /* * Add a resize listener to the tabFolderPage so that * if the user types into the example widget to change * its preferred size, and then resizes the shell, we * recalculate the preferred size correctly. */ tabFolderPage.addControlListener(ControlListener.controlResizedAdapter(e -> setExampleWidgetSize())); return tabFolderPage; } /** * Creates the "Style" group. */ @Override void createStyleGroup() { super.createStyleGroup(); /* Create the extra widgets */ balloonButton = new Button(styleGroup, SWT.CHECK); balloonButton.setText("SWT.BALLOON"); iconErrorButton = new Button(styleGroup, SWT.RADIO); iconErrorButton.setText("SWT.ICON_ERROR"); iconInformationButton = new Button(styleGroup, SWT.RADIO); iconInformationButton.setText("SWT.ICON_INFORMATION"); iconWarningButton = new Button(styleGroup, SWT.RADIO); iconWarningButton.setText("SWT.ICON_WARNING"); noIconButton = new Button(styleGroup, SWT.RADIO); noIconButton.setText(ControlExample.getResourceString("No_Icon")); } @Override void createColorAndFontGroup() { // ToolTip does not need a color and font group. } @Override void createOtherGroup() { /* Create the group */ otherGroup = new Group(controlGroup, SWT.NONE); otherGroup.setLayout(new GridLayout()); otherGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false)); otherGroup.setText(ControlExample.getResourceString("Other")); /* Create the controls */ autoHideButton = new Button(otherGroup, SWT.CHECK); autoHideButton.setText(ControlExample.getResourceString("AutoHide")); showInTrayButton = new Button(otherGroup, SWT.CHECK); showInTrayButton.setText(ControlExample.getResourceString("Show_In_Tray")); tray = display.getSystemTray(); showInTrayButton.setEnabled(tray != null); /* Add the listeners */ autoHideButton.addSelectionListener(widgetSelectedAdapter(event -> setExampleWidgetAutoHide())); showInTrayButton.addSelectionListener(widgetSelectedAdapter(event -> showExampleWidgetInTray())); shell.addDisposeListener(event -> disposeTrayItem()); /* Set the default state */ autoHideButton.setSelection(true); } @Override void createSizeGroup() { // ToolTip does not need a size group. } @Override void createBackgroundModeGroup() { // ToolTip does not need a background mode group. } /** * Disposes the "Example" widgets. */ @Override void disposeExampleWidgets() { disposeTrayItem(); super.disposeExampleWidgets(); } /** * Gets the "Example" widget children. */ @Override // Tab uses this for many things - widgets would only get set/get, listeners, and dispose. Widget[] getExampleWidgets() { return new Widget[] { toolTip1 }; } /** * Returns a list of set/get API method names (without the set/get prefix) * that can be used to set/get values in the example control(s). */ @Override String[] getMethodNames() { return new String[] { "Message", "Text" }; } /** * Gets the short text for the tab folder item. */ @Override String getShortTabText() { return "TT"; } /** * Gets the text for the tab folder item. */ @Override String getTabText() { return "ToolTip"; } /** * Sets the state of the "Example" widgets. */ @Override void setExampleWidgetState() { showExampleWidgetInTray(); setExampleWidgetAutoHide(); super.setExampleWidgetState(); balloonButton.setSelection((toolTip1.getStyle() & SWT.BALLOON) != 0); iconErrorButton.setSelection((toolTip1.getStyle() & SWT.ICON_ERROR) != 0); iconInformationButton.setSelection((toolTip1.getStyle() & SWT.ICON_INFORMATION) != 0); iconWarningButton.setSelection((toolTip1.getStyle() & SWT.ICON_WARNING) != 0); noIconButton.setSelection( (toolTip1.getStyle() & (SWT.ICON_ERROR | SWT.ICON_INFORMATION | SWT.ICON_WARNING)) == 0); autoHideButton.setSelection(toolTip1.getAutoHide()); } /** * Sets the visibility of the "Example" widgets. */ @Override void setExampleWidgetVisibility() { toolTip1.setVisible(visibleButton.getSelection()); } /** * Sets the autoHide state of the "Example" widgets. */ void setExampleWidgetAutoHide() { toolTip1.setAutoHide(autoHideButton.getSelection()); } void showExampleWidgetInTray() { if (showInTrayButton.getSelection()) { createTrayItem(); trayItem.setToolTip(toolTip1); } else { disposeTrayItem(); } } void createTrayItem() { if (trayItem == null) { trayItem = new TrayItem(tray, SWT.NONE); trayItem.setImage(instance.images[ControlExample.ciTarget]); } } void disposeTrayItem() { if (trayItem != null) { trayItem.setToolTip(null); trayItem.dispose(); trayItem = null; } } }