/*
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.flex.compiler.internal.fxg.dom.text;
import java.util.ArrayList;
import java.util.Collection;
import static org.apache.flex.compiler.fxg.FXGConstants.*;
import org.apache.flex.compiler.fxg.dom.IFXGNode;
import org.apache.flex.compiler.internal.fxg.dom.CDATANode;
import org.apache.flex.compiler.internal.fxg.dom.DOMParserHelper;
import org.apache.flex.compiler.internal.fxg.dom.ITextNode;
import org.apache.flex.compiler.problems.ICompilerProblem;
/**
* Represents a <p /> child tag of FXG <TextGraphic> content. A
* <p> tag starts a new paragraph in text content.
*/
public class ParagraphNode extends AbstractCharacterTextNode
{
//--------------------------------------------------------------------------
//
// Attributes
//
//--------------------------------------------------------------------------
// Paragraph Attributes
public String textAlign = "left";
public String textAlignLast = "left";
public double textIndent = 0.0;
public double marginLeft = 0.0;
public double marginRight = 0.0;
public double marginTop = 0.0;
public double marginBottom = 0.0;
public String direction = "ltr";
public String blockProgression = "tb";
//--------------------------------------------------------------------------
//
// IFXGNode Implementation
//
//--------------------------------------------------------------------------
/**
* A <p> allows child <span> and <br /> tags, as
* well as character data (text content).
*/
@Override
public void addChild(IFXGNode child, Collection<ICompilerProblem> problems)
{
if (child instanceof BRNode
|| child instanceof SpanNode
|| child instanceof CDATANode)
{
if (content == null)
content = new ArrayList<ITextNode>();
content.add((ITextNode)child);
}
else
{
super.addChild(child, problems);
}
}
/**
* @return The unqualified name of a paragraph node, without tag markup.
*/
@Override
public String getNodeName()
{
return FXG_P_ELEMENT;
}
/**
* This implementation processes paragraph attributes that are relevant to
* the <p> tag, as well as delegates to the parent class to process
* character attributes that are also relevant to the <p> tag.
*
* <p>
* Paragraph attributes include:
* <ul>
* <li><b>textAlign</b> (String): [left, center, right, justify] The
* alignment of the text relative to the text box edges. Default is left.</li>
* <li><b>textAlignLast</b> (String): [left, center, right, justify]: The
* alignment of the last line of the paragraph, applies if textAlign is
* justify. Default is left.</li>
* <li><b>textIndent</b> (Number): The indentation of the first line of
* text in a paragraph. The indent is relative to the left margin.
* Measured in pixels. Default is 0. Can be negative.</li>
* <li><b>marginLeft</b> (Number): The indentation applied to the left edge.
* Measured in pixels. Default is 0.</li>
* <li><b>marginRight</b> (Number): The indentation applied to the right
* edge. Measured in pixels. Default is 0.</li>
* <li><b>marginTop</b> (Number): This is the "space before" the paragraph.
* Default is 0. Minimum is 0.</li>
* <li><b>marginBottom</b> (Number): This is the "spaceAfter" the paragraph.
* Default is 0. Minimum is 0.</li>
* <li><b>direction</b> (String): [ltr, rtl] Controls the dominant writing
* direction for the paragraphs (left-to-right or right-to-left), Default
* is ltr.</li>
* <li><b>blockProgression</b> (String): [tb, rl] Controls the direction in which
* lines are stacked.</li>
* </ul>
* </p>
*
* @param name the attribute name
* @param value the attribute value
* @see AbstractTextNode#setAttribute(String, String, Collection)
*/
@Override
public void setAttribute(String name, String value, Collection<ICompilerProblem> problems)
{
if (FXG_TEXTALIGN_ATTRIBUTE.equals(name))
{
textAlign = value;
}
else if (FXG_TEXTALIGNLAST_ATTRIBUTE.equals(name))
{
textAlignLast = value;
}
else if (FXG_TEXTINDENT_ATTRIBUTE.equals(name))
{
textIndent = DOMParserHelper.parseDouble(this, value, name, textIndent, problems);
}
else if (FXG_MARGINLEFT_ATTRIBUTE.equals(name))
{
marginLeft = DOMParserHelper.parseDouble(this, value, name, marginLeft, problems);
}
else if (FXG_MARGINRIGHT_ATTRIBUTE.equals(name))
{
marginRight = DOMParserHelper.parseDouble(this, value, name, marginRight, problems);
}
else if (FXG_MARGINTOP_ATTRIBUTE.equals(name))
{
marginTop = DOMParserHelper.parseDouble(this, value, name, marginTop, problems);
}
else if (FXG_MARGINBOTTOM_ATTRIBUTE.equals(name))
{
marginBottom = DOMParserHelper.parseDouble(this, value, name, marginBottom, problems);
}
else if (FXG_DIRECTION_ATTRIBUTE.equals(name))
{
direction = value;
}
else if (FXG_BLOCKPROGRESSION_ATTRIBUTE.equals(name))
{
blockProgression = value;
}
else
{
super.setAttribute(name, value, problems);
return;
}
// Remember that this attribute was set on this node.
rememberAttribute(name, value);
}
}