Java tutorial
/* * DBeaver - Universal Database Manager * Copyright (C) 2010-2016 Serge Rieder (serge@jkiss.org) * Copyright (C) 2011-2012 Eugene Fradkin (eugene.fradkin@gmail.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License (version 2) * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ package org.jkiss.dbeaver.ui.preferences; import org.eclipse.core.runtime.IAdaptable; import org.eclipse.jface.dialogs.ControlEnableState; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.preference.PreferenceDialog; import org.eclipse.osgi.util.NLS; 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.*; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPreferencePage; import org.eclipse.ui.IWorkbenchPropertyPage; import org.eclipse.ui.dialogs.PreferencesUtil; import org.jkiss.dbeaver.Log; import org.jkiss.dbeaver.core.CoreMessages; import org.jkiss.dbeaver.core.DBeaverCore; import org.jkiss.dbeaver.model.DBPContextProvider; import org.jkiss.dbeaver.model.DBPDataSourceContainer; import org.jkiss.dbeaver.model.DBPPreferenceStore; import org.jkiss.dbeaver.model.exec.DBCExecutionContext; import org.jkiss.dbeaver.model.navigator.DBNDataSource; import org.jkiss.dbeaver.model.navigator.DBNNode; import org.jkiss.dbeaver.ui.UIUtils; import org.jkiss.dbeaver.ui.dialogs.connection.SelectDataSourceDialog; import org.jkiss.dbeaver.ui.editors.IDatabaseEditorInput; /** * TargetPrefPage */ public abstract class TargetPrefPage extends AbstractPrefPage implements IWorkbenchPreferencePage, IWorkbenchPropertyPage { static final Log log = Log.getLog(TargetPrefPage.class); private DBNDataSource containerNode; private Button dataSourceSettingsButton; private Control configurationBlockControl; private Link changeSettingsTargetLink; private ControlEnableState blockEnableState; protected TargetPrefPage() { } public final boolean isDataSourcePreferencePage() { return containerNode != null; } protected abstract boolean hasDataSourceSpecificOptions(DBPDataSourceContainer dsContainer); protected abstract boolean supportsDataSourceSpecificOptions(); protected void createPreferenceHeader(Composite composite) { } protected abstract Control createPreferenceContent(Composite composite); protected abstract void loadPreferences(DBPPreferenceStore store); protected abstract void savePreferences(DBPPreferenceStore store); protected abstract void clearPreferences(DBPPreferenceStore store); protected abstract String getPropertyPageID(); public DBPDataSourceContainer getDataSourceContainer() { return containerNode == null ? null : containerNode.getObject(); } @Override public void init(IWorkbench workbench) { } @Override public IAdaptable getElement() { return containerNode; } @Override public void setElement(IAdaptable element) { if (element == null) { return; } containerNode = element.getAdapter(DBNDataSource.class); if (containerNode == null) { final DBPDataSourceContainer dsContainer = element.getAdapter(DBPDataSourceContainer.class); if (dsContainer != null) { containerNode = (DBNDataSource) DBeaverCore.getInstance().getNavigatorModel().findNode(dsContainer); } else { IDatabaseEditorInput dbInput = element.getAdapter(IDatabaseEditorInput.class); if (dbInput != null) { DBNNode dbNode = dbInput.getNavigatorNode(); if (dbNode instanceof DBNDataSource) { containerNode = (DBNDataSource) dbNode; } } else if (element instanceof DBPContextProvider) { DBCExecutionContext context = ((DBPContextProvider) element).getExecutionContext(); if (context != null) { containerNode = (DBNDataSource) DBeaverCore.getInstance().getNavigatorModel() .findNode(context.getDataSource().getContainer()); } } else if (element instanceof DBPDataSourceContainer) { containerNode = (DBNDataSource) DBeaverCore.getInstance().getNavigatorModel() .findNode((DBPDataSourceContainer) element); } } } } public void applyData(Object data) { if (containerNode == null && data instanceof IAdaptable) { setElement((IAdaptable) data); } } @Override protected Label createDescriptionLabel(Composite parent) { if (isDataSourcePreferencePage()) { Composite composite = UIUtils.createPlaceholder(parent, 2); composite.setFont(parent.getFont()); composite.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); dataSourceSettingsButton = new Button(composite, SWT.CHECK); dataSourceSettingsButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { boolean enabled = dataSourceSettingsButton.getSelection(); enableDataSourceSpecificSettings(enabled); } }); String dataSourceName = containerNode.getDataSourceContainer().getName(); dataSourceSettingsButton.setText( NLS.bind(CoreMessages.pref_page_target_button_use_datasource_settings, dataSourceName)); GridData gd = new GridData(GridData.FILL_HORIZONTAL); dataSourceSettingsButton.setLayoutData(gd); changeSettingsTargetLink = createLink(composite, CoreMessages.pref_page_target_link_show_global_settings); changeSettingsTargetLink.setLayoutData(new GridData(SWT.END, SWT.CENTER, false, false)); } else if (supportsDataSourceSpecificOptions()) { changeSettingsTargetLink = createLink(parent, CoreMessages.pref_page_target_link_show_datasource_settings); changeSettingsTargetLink.setLayoutData(new GridData(SWT.END, SWT.CENTER, true, false)); } Label horizontalLine = new Label(parent, SWT.SEPARATOR | SWT.HORIZONTAL); horizontalLine.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, false, 2, 1)); horizontalLine.setFont(parent.getFont()); createPreferenceHeader(parent); return super.createDescriptionLabel(parent); } /* * @see org.eclipse.jface.preference.IPreferencePage#createContents(Composite) */ @Override protected Control createContents(Composite parent) { Composite composite = UIUtils.createPlaceholder(parent, 1); configurationBlockControl = createPreferenceContent(composite); configurationBlockControl.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true)); if (isDataSourcePreferencePage()) { boolean useProjectSettings = hasDataSourceSpecificOptions(getDataSourceContainer()); enableDataSourceSpecificSettings(useProjectSettings); } { DBPPreferenceStore store = useDataSourceSettings() ? getDataSourceContainer().getPreferenceStore() : DBeaverCore.getGlobalPreferenceStore(); loadPreferences(store); } Dialog.applyDialogFont(composite); return composite; } private Link createLink(Composite composite, String text) { Link link = UIUtils.createLink(composite, "<A>" + text + "</A>", new SelectionListener() { @Override public void widgetSelected(SelectionEvent e) { doLinkActivated((Link) e.widget); } @Override public void widgetDefaultSelected(SelectionEvent e) { widgetSelected(e); } }); link.setFont(composite.getFont()); return link; } protected void enableDataSourceSpecificSettings(boolean useProjectSpecificSettings) { dataSourceSettingsButton.setSelection(useProjectSpecificSettings); enablePreferenceContent(useProjectSpecificSettings); updateLinkVisibility(); doStatusChanged(); } protected void doStatusChanged() { /* if (!isProjectPreferencePage() || useDataSourceSettings()) { updateStatus(fBlockStatus); } else { updateStatus(new StatusInfo()); } */ } protected void enablePreferenceContent(boolean enable) { if (enable) { if (blockEnableState != null) { blockEnableState.restore(); blockEnableState = null; } } else { if (blockEnableState == null) { blockEnableState = ControlEnableState.disable(configurationBlockControl); } } } protected boolean useDataSourceSettings() { return isDataSourcePreferencePage() && dataSourceSettingsButton != null && dataSourceSettingsButton.getSelection(); } private void updateLinkVisibility() { if (changeSettingsTargetLink == null || changeSettingsTargetLink.isDisposed()) { return; } if (isDataSourcePreferencePage()) { //changeSettingsTargetLink.setEnabled(!useDataSourceSettings()); changeSettingsTargetLink.setEnabled(true); } } private void doLinkActivated(Link link) { PreferenceDialog prefDialog = null; if (isDataSourcePreferencePage()) { // Show global settings prefDialog = PreferencesUtil.createPreferenceDialogOn(getShell(), getPropertyPageID(), null, //new String[]{getPropertyPageID()}, null); } else if (supportsDataSourceSpecificOptions()) { // Select datasource DBPDataSourceContainer dataSource = SelectDataSourceDialog.selectDataSource(getShell()); if (dataSource != null) { DBNNode dsNode = DBeaverCore.getInstance().getNavigatorModel().getNodeByObject(dataSource); if (dsNode instanceof DBNDataSource) { prefDialog = PreferencesUtil.createPropertyDialogOn(getShell(), (DBNDataSource) dsNode, getPropertyPageID(), null, //new String[]{getPropertyPageID()}, null); } } } if (prefDialog != null) { prefDialog.open(); } } @Override protected void performApply() { performOk(); } @Override public final boolean performOk() { DBPPreferenceStore store = isDataSourcePreferencePage() ? getDataSourceContainer().getPreferenceStore() : DBeaverCore.getGlobalPreferenceStore(); if (isDataSourcePreferencePage() && !useDataSourceSettings()) { // Just delete datasource specific settings clearPreferences(store); } else { savePreferences(store); } //PrefUtils.savePreferenceStore(store); return super.performOk(); } }