Java tutorial
/* This file belongs to the Servoy development and deployment environment, Copyright (C) 1997-2012 Servoy BV This program is free software; you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. 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 Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program; if not, see http://www.gnu.org/licenses or write to the Free Software Foundation,Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 */ package com.servoy.j2db.server.headlessclient.dataui; import java.awt.Dimension; import java.awt.Point; import java.awt.Rectangle; import java.util.Hashtable; import java.util.Properties; import org.apache.wicket.Component; import org.apache.wicket.MarkupContainer; import org.apache.wicket.model.AbstractReadOnlyModel; import com.servoy.j2db.IServiceProvider; import com.servoy.j2db.component.ComponentFactory; import com.servoy.j2db.persistence.Field; import com.servoy.j2db.persistence.IAnchorConstants; import com.servoy.j2db.persistence.IFormElement; import com.servoy.j2db.persistence.ISupportAnchors; import com.servoy.j2db.server.headlessclient.WrapperContainer; import com.servoy.j2db.ui.ISupportWebBounds; import com.servoy.j2db.util.Utils; /** * Helper class for web anchoring * @author gboros */ public class WebAnchoringHelper { public static Component getWrapperComponent(Component comp, IFormElement obj, int start, Dimension panelSize, boolean leftToRight, boolean isInListView) { MarkupContainer compWrapper = new WrapperContainer( ComponentFactory.getWebID(null, obj) + TemplateGenerator.WRAPPER_SUFFIX, comp); Point l = (obj).getLocation(); if (isInListView) { // substract left indicator l.x = Math.max(l.x - 3, 0); } Dimension s = (obj).getSize(); int anchors = 0; if (obj instanceof ISupportAnchors) anchors = ((ISupportAnchors) obj).getAnchors(); int offsetWidth = s.width; int offsetHeight = s.height; if (comp instanceof ISupportWebBounds) { Rectangle b = ((ISupportWebBounds) comp).getWebBounds(); offsetWidth = b.width; offsetHeight = b.height; } final String styleToReturn = WebAnchoringHelper.computeWrapperDivStyle(l.y, l.x, offsetWidth, offsetHeight, s.width, s.height, anchors, start, start + panelSize.height, panelSize.width, leftToRight); // first the default compWrapper.add(new StyleAppendingModifier(new AbstractReadOnlyModel<String>() { @Override public String getObject() { return styleToReturn; } })); // then the style t hat can be set on the wrapped component compWrapper.add(StyleAttributeModifierModel.INSTANCE); // TODO: this needs to be done in a cleaner way. See what is the relation between // margin, padding and border when calculating the websize in ChangesRecorder vs. TemplateGenerator. // Looks like one of the three is not taken into account during calculations. For now decided to remove // the margin and leave the padding and border. comp.add(new StyleAppendingModifier(new AbstractReadOnlyModel<String>() { @Override public String getObject() { return "margin: 0px;"; //$NON-NLS-1$ } })); return compWrapper; } public static boolean needsWrapperDivForAnchoring(Field field) { // this needs to be in sync with DesignModeBehavior.needsWrapperDivForAnchoring(String type) return (field.getDisplayType() == Field.PASSWORD) || (field.getDisplayType() == Field.TEXT_AREA) || (field.getDisplayType() == Field.COMBOBOX) || (field.getDisplayType() == Field.TYPE_AHEAD) || (field.getDisplayType() == Field.TEXT_FIELD) || (field.getDisplayType() == Field.LIST_BOX) || (field.getDisplayType() == Field.MULTISELECT_LISTBOX) || (field.getDisplayType() == Field.HTML_AREA && field.getEditable()); } private static String computeWrapperDivStyle(int top, int left, int width, int height, int offsetWidth, int offsetHeight, int anchorFlags, int partStartY, int partEndY, int partWidth, boolean leftToRight) { Hashtable<String, String> style = new Hashtable<String, String>(); if (top != -1) style.put("top", top + "px"); //$NON-NLS-1$ //$NON-NLS-2$ if (left != -1) style.put("left", left + "px"); //$NON-NLS-1$ //$NON-NLS-2$ if (width != -1) style.put("width", width + "px"); //$NON-NLS-1$ //$NON-NLS-2$ if (height != -1) style.put("height", height + "px"); //$NON-NLS-1$ //$NON-NLS-2$ boolean anchoredTop = (anchorFlags & IAnchorConstants.NORTH) != 0; boolean anchoredRight = (anchorFlags & IAnchorConstants.EAST) != 0; boolean anchoredBottom = (anchorFlags & IAnchorConstants.SOUTH) != 0; boolean anchoredLeft = (anchorFlags & IAnchorConstants.WEST) != 0; if (!anchoredLeft && !anchoredRight) anchoredLeft = true; if (!anchoredTop && !anchoredBottom) anchoredTop = true; int deltaLeft = leftToRight ? 0 : offsetWidth - width; int deltaRight = leftToRight ? offsetWidth - width : 0; int deltaBottom = offsetHeight - height; if (anchoredTop) style.put("top", (top - partStartY) + "px"); //$NON-NLS-1$ //$NON-NLS-2$ else style.remove("top"); //$NON-NLS-1$ if (anchoredBottom) style.put("bottom", (partEndY - top - offsetHeight + deltaBottom) + "px"); //$NON-NLS-1$ //$NON-NLS-2$ if (!anchoredTop || !anchoredBottom) style.put("height", height + "px"); //$NON-NLS-1$ //$NON-NLS-2$ else style.remove("height"); //$NON-NLS-1$ if (anchoredLeft) style.put("left", (left + deltaLeft) + "px"); //$NON-NLS-1$ //$NON-NLS-2$ else style.remove("left"); //$NON-NLS-1$ if (anchoredRight) style.put("right", (partWidth - left - offsetWidth + deltaRight) + "px"); //$NON-NLS-1$ //$NON-NLS-2$ if (!anchoredLeft || !anchoredRight) style.put("width", width + "px"); //$NON-NLS-1$ //$NON-NLS-2$ else style.remove("width"); //$NON-NLS-1$ style.put("position", "absolute"); //$NON-NLS-1$ //$NON-NLS-2$ if (width != -1) style.put("min-width", width + "px"); //$NON-NLS-1$ //$NON-NLS-2$ StringBuffer sb = new StringBuffer(); for (String key : style.keySet()) { String value = style.get(key); sb.append(key); sb.append(": "); //$NON-NLS-1$ sb.append(value); sb.append("; "); //$NON-NLS-1$ } return sb.toString(); } public static void addMinSize(int anchors, IServiceProvider application, Properties cssProperties, Dimension size, IFormElement formElement) { if (size != null && (application == null || Utils.getAsBoolean(application.getRuntimeProperties().get("enableAnchors"))) && !TemplateGenerator.isTableViewComponent(formElement)) { if (((anchors & IAnchorConstants.EAST) > 0) && ((anchors & IAnchorConstants.WEST) > 0)) { cssProperties.setProperty("min-width", size.width + "px"); } if (((anchors & IAnchorConstants.NORTH) > 0) && ((anchors & IAnchorConstants.SOUTH) > 0) && size != null) { cssProperties.setProperty("min-height", size.height + "px"); } } } }