Java tutorial
/* * This library is part of OpenCms - * the Open Source Content Management System * * Copyright (c) Alkacon Software GmbH (http://www.alkacon.com) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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. * * For further information about Alkacon Software, please see the * company website: http://www.alkacon.com * * For further information about OpenCms, please see the * project website: http://www.opencms.org * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package org.opencms.gwt.client.ui.input; import org.opencms.gwt.client.CmsCoreProvider; import org.opencms.gwt.client.I_CmsHasInit; import org.opencms.gwt.client.ui.CmsPushButton; import org.opencms.gwt.client.ui.I_CmsAutoHider; import org.opencms.gwt.client.ui.css.I_CmsImageBundle; import org.opencms.gwt.client.ui.input.form.CmsWidgetFactoryRegistry; import org.opencms.gwt.client.ui.input.form.I_CmsFormWidgetFactory; import java.util.Map; import com.google.gwt.dom.client.Style; import com.google.gwt.dom.client.Style.Cursor; import com.google.gwt.dom.client.Style.Position; import com.google.gwt.dom.client.Style.Unit; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.user.client.ui.Composite; /** * A widget for selecting a resource from an ADE gallery dialog.<p> * * @since 8.0.0 */ public class CmsGalleryField extends Composite implements I_CmsFormWidget, I_CmsHasInit, I_CmsHasGhostValue { /** The widget type. */ public static final String WIDGET_TYPE = "gallery"; /** The textbox containing the currently selected path. */ protected CmsTextBox m_textbox; /** The HTML id of the field. */ private String m_id; /** * Constructs a new gallery widget.<p> */ public CmsGalleryField() { CmsTextBox box = new CmsTextBox(); m_id = box.getId(); m_textbox = box; box.addClickHandler(new ClickHandler() { /** * @see com.google.gwt.event.dom.client.ClickHandler#onClick(com.google.gwt.event.dom.client.ClickEvent) */ public void onClick(ClickEvent event) { openGalleryDialog(); } }); initWidget(box); } /** * Initializes this class.<p> */ public static void initClass() { // registers a factory for creating new instances of this widget CmsWidgetFactoryRegistry.instance().registerFactory(WIDGET_TYPE, new I_CmsFormWidgetFactory() { /** * @see org.opencms.gwt.client.ui.input.form.I_CmsFormWidgetFactory#createWidget(java.util.Map) */ public I_CmsFormWidget createWidget(Map<String, String> widgetParams) { return new CmsGalleryField(); } }); } /** * @see org.opencms.gwt.client.ui.input.I_CmsFormWidget#getApparentValue() */ public String getApparentValue() { return getFormValueAsString(); } /** * @see org.opencms.gwt.client.ui.input.I_CmsFormWidget#getFieldType() */ public FieldType getFieldType() { return FieldType.STRING; } /** * @see org.opencms.gwt.client.ui.input.I_CmsFormWidget#getFormValue() */ public Object getFormValue() { return m_textbox.getFormValue(); } /** * @see org.opencms.gwt.client.ui.input.I_CmsFormWidget#getFormValueAsString() */ public String getFormValueAsString() { return m_textbox.getFormValueAsString(); } /** * @see org.opencms.gwt.client.ui.input.I_CmsFormWidget#isEnabled() */ public boolean isEnabled() { return m_textbox.isEnabled(); } /** * @see org.opencms.gwt.client.ui.input.I_CmsFormWidget#reset() */ public void reset() { m_textbox.reset(); } /** * @see org.opencms.gwt.client.ui.input.I_CmsFormWidget#setAutoHideParent(org.opencms.gwt.client.ui.I_CmsAutoHider) */ public void setAutoHideParent(I_CmsAutoHider autoHideParent) { // do nothing } /** * @see org.opencms.gwt.client.ui.input.I_CmsFormWidget#setEnabled(boolean) */ public void setEnabled(boolean enabled) { m_textbox.setEnabled(enabled); } /** * @see org.opencms.gwt.client.ui.input.I_CmsFormWidget#setErrorMessage(java.lang.String) */ public void setErrorMessage(String errorMessage) { // do nothing } /** * @see org.opencms.gwt.client.ui.input.I_CmsFormWidget#setFormValueAsString(java.lang.String) */ public void setFormValueAsString(String value) { m_textbox.setFormValueAsString(value); } /** * @see org.opencms.gwt.client.ui.input.I_CmsHasGhostValue#setGhostMode(boolean) */ public void setGhostMode(boolean ghostMode) { m_textbox.setGhostMode(ghostMode); } /** * @see org.opencms.gwt.client.ui.input.I_CmsHasGhostValue#setGhostValue(java.lang.String, boolean) */ public void setGhostValue(String value, boolean isGhostMode) { m_textbox.setGhostValue(value, isGhostMode); } /** * Creates the URL for the gallery dialog IFrame.<p> * * @return the URL for the gallery dialog IFrame */ protected String buildGalleryUrl() { String basePath = "/system/modules/org.opencms.ade.galleries/gallery.jsp"; return CmsCoreProvider.get().link(basePath + "?dialogmode=widget&fieldid=" + m_id); } /** * Internal method which opens the gallery dialog.<p> */ protected void openGalleryDialog() { String title = org.opencms.gwt.client.Messages.get() .key(org.opencms.gwt.client.Messages.GUI_GALLERY_SELECT_DIALOG_TITLE_0); final CmsFramePopup popup = new CmsFramePopup(title, buildGalleryUrl()); popup.setCloseHandler(new Runnable() { public void run() { m_textbox.setGhostMode(false); } }); popup.setId(m_id); popup.getFrame().setSize("700px", "490px"); popup.center(); CmsPushButton button = new CmsPushButton(I_CmsImageBundle.INSTANCE.style().closeIcon()); Style style = button.getElement().getStyle(); style.setRight(4, Unit.PX); style.setTop(0, Unit.PX); style.setPosition(Position.ABSOLUTE); style.setCursor(Cursor.POINTER); button.addClickHandler(new ClickHandler() { /** * @see com.google.gwt.event.dom.client.ClickHandler#onClick(com.google.gwt.event.dom.client.ClickEvent) */ public void onClick(ClickEvent event) { popup.hide(); } }); popup.insertFront(button); } }