Java tutorial
/*! * This program is free software; you can redistribute it and/or modify it under the * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software * Foundation. * * You should have received a copy of the GNU Lesser General Public License along with this * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html * or from the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * 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 Lesser General Public License for more details. * * Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved. */ package org.pentaho.gwt.widgets.client.dialogs; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.user.client.Event; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.AbsolutePanel; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.Grid; import com.google.gwt.user.client.ui.HasHorizontalAlignment; import com.google.gwt.user.client.ui.HasVerticalAlignment; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.RootPanel; import com.google.gwt.user.client.ui.Widget; import org.pentaho.gwt.widgets.client.utils.FrameUtils; public class ResizableDialogBox { private AbsolutePanel boundaryPanel; private WindowPanel windowPanel; private IDialogValidatorCallback validatorCallback; private IDialogCallback callback; private Widget content; public ResizableDialogBox(final String headerText, String okText, String cancelText, final Widget content, final boolean modal) { this.content = content; boundaryPanel = new AbsolutePanel() { public void onBrowserEvent(Event event) { super.onBrowserEvent(event); if (!modal && event.getTypeInt() == Event.ONCLICK) { hide(); } } }; boundaryPanel.setSize("100%", Window.getClientHeight() + Window.getScrollTop() + "px"); //$NON-NLS-1$ //$NON-NLS-2$ boundaryPanel.setVisible(true); RootPanel.get().add(boundaryPanel, 0, 0); boundaryPanel.sinkEvents(Event.ONCLICK); boundaryPanel.getElement().getStyle().setProperty("cursor", "wait"); //$NON-NLS-1$ //$NON-NLS-2$ // initialize window controller which provides drag and resize windows WindowController windowController = new WindowController(boundaryPanel); // content wrapper Button ok = new Button(okText); ok.setStylePrimaryName("pentaho-button"); ok.getElement().setAttribute("id", "okButton"); //$NON-NLS-1$ //$NON-NLS-2$ ok.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { if (validatorCallback == null || (validatorCallback != null && validatorCallback.validate())) { try { if (callback != null) { callback.okPressed(); } } catch (Throwable dontCare) { //ignore } hide(); } } }); final HorizontalPanel dialogButtonPanel = new HorizontalPanel(); dialogButtonPanel.setSpacing(2); dialogButtonPanel.add(ok); if (cancelText != null) { Button cancel = new Button(cancelText); cancel.setStylePrimaryName("pentaho-button"); cancel.getElement().setAttribute("id", "cancelButton"); //$NON-NLS-1$ //$NON-NLS-2$ cancel.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { try { if (callback != null) { callback.cancelPressed(); } } catch (Throwable dontCare) { //ignore } hide(); } }); dialogButtonPanel.add(cancel); } HorizontalPanel dialogButtonPanelWrapper = new HorizontalPanel(); if (okText != null && cancelText != null) { dialogButtonPanelWrapper.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_RIGHT); } else { dialogButtonPanelWrapper.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER); } dialogButtonPanelWrapper.setStyleName("dialogButtonPanel"); //$NON-NLS-1$ dialogButtonPanelWrapper.setWidth("100%"); //$NON-NLS-1$ dialogButtonPanelWrapper.add(dialogButtonPanel); Grid dialogContent = new Grid(2, 1); dialogContent.setCellPadding(0); dialogContent.setCellSpacing(0); dialogContent.getCellFormatter().setVerticalAlignment(1, 0, HasVerticalAlignment.ALIGN_TOP); dialogContent.getCellFormatter().setHorizontalAlignment(1, 0, HasHorizontalAlignment.ALIGN_LEFT); // add content dialogContent.setWidget(0, 0, content); dialogContent.getCellFormatter().setVerticalAlignment(0, 0, HasVerticalAlignment.ALIGN_TOP); // add button panel dialogContent.setWidget(1, 0, dialogButtonPanelWrapper); dialogContent.getCellFormatter().setVerticalAlignment(1, 0, HasVerticalAlignment.ALIGN_BOTTOM); dialogContent.setWidth("100%"); //$NON-NLS-1$ dialogContent.setHeight("100%"); //$NON-NLS-1$ windowPanel = new WindowPanel(windowController, headerText, dialogContent, true); } public void hide() { boundaryPanel.clear(); RootPanel.get().remove(boundaryPanel); // show <embeds> FrameUtils.toggleEmbedVisibility(true); } public void center() { boundaryPanel.clear(); int left = (Window.getClientWidth() - windowPanel.getOffsetWidth()) >> 1; int top = (Window.getClientHeight() - windowPanel.getOffsetHeight()) >> 1; boundaryPanel.add(windowPanel, Window.getScrollLeft() + left, Window.getScrollTop() + top); left = (Window.getClientWidth() - windowPanel.getOffsetWidth()) >> 1; top = (Window.getClientHeight() - windowPanel.getOffsetHeight()) >> 1; boundaryPanel.clear(); boundaryPanel.add(windowPanel, Window.getScrollLeft() + left, Window.getScrollTop() + top); // hide <embeds> FrameUtils.toggleEmbedVisibility(false); } public void show() { center(); } public IDialogValidatorCallback getValidatorCallback() { return validatorCallback; } public void setValidatorCallback(IDialogValidatorCallback validatorCallback) { this.validatorCallback = validatorCallback; } public IDialogCallback getCallback() { return callback; } public void setCallback(IDialogCallback callback) { this.callback = callback; } public Widget getContent() { return content; } public void setText(String text) { windowPanel.setText(text); } public void setTitle(String title) { windowPanel.setTitle(title); } public void setPixelSize(int width, int height) { windowPanel.setPixelSize(width, height); } }