| /* |
| * Copyright 2002,2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.jelly.tags.swing; |
| |
| import java.awt.Component; |
| import java.awt.GridBagConstraints; |
| |
| import org.apache.commons.jelly.JellyTagException; |
| import org.apache.commons.jelly.TagSupport; |
| import org.apache.commons.jelly.XMLOutput; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| /** |
| * Represents a tabular cell inside a <tl> tag inside a <tableLayout> |
| * tag which mimicks the <td> HTML tag. |
| * |
| * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> |
| * @version $Revision: 1.7 $ |
| */ |
| public class TdTag extends TagSupport implements ContainerTag { |
| |
| /** The Log to which logging calls will be made. */ |
| private static final Log log = LogFactory.getLog(TdTag.class); |
| |
| private String align; |
| private String valign; |
| private int colspan = 1; |
| private int rowspan = 1; |
| private boolean colfill = false; |
| private boolean rowfill = false; |
| |
| public TdTag() { |
| } |
| |
| // ContainerTag interface |
| //------------------------------------------------------------------------- |
| |
| /** |
| * Adds a child component to this parent |
| */ |
| public void addChild(Component component, Object constraints) throws JellyTagException { |
| // add my child component to the layout manager |
| TrTag tag = (TrTag) findAncestorWithClass( TrTag.class ); |
| if (tag == null) { |
| throw new JellyTagException( "this tag must be nested within a <tr> tag" ); |
| } |
| tag.addCell(component, createConstraints()); |
| } |
| |
| |
| // Tag interface |
| //------------------------------------------------------------------------- |
| public void doTag(final XMLOutput output) throws JellyTagException { |
| invokeBody(output); |
| } |
| |
| |
| // Properties |
| //------------------------------------------------------------------------- |
| |
| /** |
| * Sets the horizontal alignment to a case insensitive value of {LEFT, CENTER, RIGHT} |
| */ |
| public void setAlign(String align) { |
| this.align = align; |
| } |
| |
| /** |
| * Sets the vertical alignment to a case insensitive value of {TOP, MIDDLE, BOTTOM} |
| */ |
| public void setValign(String valign) { |
| this.valign = valign; |
| } |
| |
| |
| /** |
| * Sets the number of columns that this cell should span. The default value is 1 |
| */ |
| public void setColspan(int colspan) { |
| this.colspan = colspan; |
| } |
| |
| /** |
| * Sets the number of rows that this cell should span. The default value is 1 |
| */ |
| public void setRowspan(int rowspan) { |
| this.rowspan = rowspan; |
| } |
| |
| /** |
| * Returns the colfill. |
| * @return boolean |
| */ |
| public boolean isColfill() { |
| return colfill; |
| } |
| |
| /** |
| * Returns the rowfill. |
| * @return boolean |
| */ |
| public boolean isRowfill() { |
| return rowfill; |
| } |
| |
| /** |
| * Sets whether or not this column should allow its component to stretch to fill the space available |
| */ |
| public void setColfill(boolean colfill) { |
| this.colfill = colfill; |
| } |
| |
| /** |
| * Sets whether or not this row should allow its component to stretch to fill the space available |
| */ |
| public void setRowfill(boolean rowfill) { |
| this.rowfill = rowfill; |
| } |
| |
| |
| // Implementation methods |
| //------------------------------------------------------------------------- |
| |
| /** |
| * Factory method to create a new constraints object |
| */ |
| protected GridBagConstraints createConstraints() { |
| GridBagConstraints answer = new GridBagConstraints(); |
| answer.anchor = getAnchor(); |
| if (colspan < 1) { |
| colspan = 1; |
| } |
| if (rowspan < 1) { |
| rowspan = 1; |
| } |
| if (isColfill()) { |
| answer.fill = isRowfill() |
| ? GridBagConstraints.BOTH |
| : GridBagConstraints.HORIZONTAL; |
| } |
| else { |
| answer.fill = isRowfill() |
| ? GridBagConstraints.VERTICAL |
| : GridBagConstraints.NONE; |
| } |
| answer.weightx = 0.2; |
| answer.weighty = 0; |
| answer.gridwidth = colspan; |
| answer.gridheight = rowspan; |
| return answer; |
| } |
| |
| /** |
| * @return the GridBagConstraints enumeration for achor |
| */ |
| protected int getAnchor() { |
| boolean isTop = "top".equalsIgnoreCase(valign); |
| boolean isBottom = "bottom".equalsIgnoreCase(valign); |
| |
| if ("center".equalsIgnoreCase(align)) { |
| if (isTop) { |
| return GridBagConstraints.NORTH; |
| } |
| else if (isBottom) { |
| return GridBagConstraints.SOUTH; |
| } |
| else { |
| return GridBagConstraints.CENTER; |
| } |
| } |
| else if ("right".equalsIgnoreCase(align)) { |
| if (isTop) { |
| return GridBagConstraints.NORTHEAST; |
| } |
| else if (isBottom) { |
| return GridBagConstraints.SOUTHEAST; |
| } |
| else { |
| return GridBagConstraints.EAST; |
| } |
| } |
| else { |
| // defaults to left |
| if (isTop) { |
| return GridBagConstraints.NORTHWEST; |
| } |
| else if (isBottom) { |
| return GridBagConstraints.SOUTHWEST; |
| } |
| else { |
| return GridBagConstraints.WEST; |
| } |
| } |
| } |
| } |