comparison java/src/uk/ac/qmul/eecs/ccmi/simpletemplate/MultiLineString.java @ 0:9418ab7b7f3f

Initial import

+/*  
+ CCmI Editor - A Collaborative Cross-Modal Diagram Editing Tool
+	  
+ Copyright (C) 2002 Cay S. Horstmann (http://horstmann.com)
+ Copyright (C) 2011  Queen Mary University of London (http://ccmi.eecs.qmul.ac.uk/)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package uk.ac.qmul.eecs.ccmi.simpletemplate;
+
+import java.awt.Dimension;
+import java.awt.Graphics2D;
+import java.awt.geom.Rectangle2D;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Set;
+
+import javax.swing.JLabel;
+
+import uk.ac.qmul.eecs.ccmi.diagrammodel.NodeProperties.Modifiers;
+
+/**
+   A string that can extend over multiple lines.
+*/
+public class MultiLineString {
+   /**
+      Constructs an empty, centered, normal size multiline
+      string.
+   */
+   public MultiLineString(){ 
+      text = ""; 
+      arrayText = null;
+      justification = CENTER;
+      size = NORMAL;
+      isSingleLine = true;
+   }
+   /**
+      Sets the value of the text property.
+      @param newValue the text of the multiline string
+   */
+   public void setText(String newValue){
+	   setText(newValue,null);
+   }
+   
+   public void setText(String newValue, ModifierView[] modifierViews) {
+	   isSingleLine = true;
+	   text = newValue; 
+	   this.modifierViews = modifierViews;
+	   format(); 
+   }
+   
+   public void setText(String[] newValue, Modifiers modifiers){
+	   isSingleLine = false;
+	   this.modifiers = modifiers;
+	   arrayText = newValue;
+	   format();
+   }
+   
+   public void setBold(boolean bold){
+	   isBold = bold;
+	   format();
+   }
+   /**
+      Gets the value of the text property.
+      @return the text of the multiline string
+    */
+   public String getText() { 
+	   if(isSingleLine)
+		   return text;
+	   else{
+		   StringBuilder builder = new StringBuilder("");
+		   for(int i=0; i<arrayText.length; i++){
+			   builder.append(arrayText[i]);
+			   builder.append('\n');
+		   }
+		   return builder.toString();
+	   }
+   }
+   /**
+      Sets the value of the justification property.
+      @param newValue the justification, one of LEFT, CENTER, 
+      RIGHT
+   */
+   public void setJustification(int newValue) { justification = newValue; format(); }
+   /**
+      Gets the value of the justification property.
+      @return the justification, one of LEFT, CENTER, 
+      RIGHT
+   */
+   public int getJustification() { return justification; }
+   /**
+      Sets the value of the size property.
+      @param newValue the size, one of SMALL, NORMAL, LARGE
+   */
+   public void setSize(int newValue) { size = newValue; format(); }
+   /**
+      Gets the value of the size property.
+      @return the size, one of SMALL, NORMAL, LARGE
+   */
+   public int getSize() { return size; }
+   
+   @Override
+   public String toString(){
+	   if(isSingleLine)
+		   return text.replace('\n', '|');
+	   else 
+		   return getText().replace('\n', '|');
+   }
+
+   private void format(){
+      StringBuffer prefix = new StringBuffer();
+      StringBuffer suffix = new StringBuffer();
+      StringBuffer htmlText = new StringBuffer();
+      prefix.append("&nbsp;");
+      suffix.insert(0, "&nbsp;");
+      if (size == LARGE){
+         prefix.append("<font size=\"+1\">");
+         suffix.insert(0, "</font>");
+      }
+      if (size == SMALL){
+         prefix.append("<font size=\"-1\">");
+         suffix.insert(0, "</font>");
+      }
+      
+      htmlText.append("<html>");
+      if(isSingleLine){
+    	  if(isBold)
+    		  prefix.append("<b>");
+    	  htmlText.append(prefix);
+    	  
+    	  String formattedText = text;
+    	  if(modifierViews != null){
+	    	  for(ModifierView view : modifierViews){
+	    		  formattedText = formatFromView(formattedText,view);
+	    	  }
+    	  }
+    	  htmlText.append(formattedText);
+    	  
+    	  if(isBold)
+    		  suffix.insert(0, "</b>");
+    	  htmlText.append(suffix);
+      }else{ // multi line
+    	  boolean first = true;
+    	  for(int i=0; i<arrayText.length; i++){
+    		  if (first) 
+    			  first = false; 
+    		  else 
+    			  htmlText.append("<br>");
+    		  htmlText.append(prefix);
+    		  String textLine = arrayText[i];
+    		  Set<Integer> indexes = modifiers.getIndexes(i);
+    		  for(Integer I : indexes){
+    			  ModifierView view = (ModifierView)modifiers.getView(modifiers.getTypes().get(I));
+    			  textLine = formatFromView(textLine, view);
+    		  }
+    		  htmlText.append(textLine);
+    		  htmlText.append(suffix);
+    	  }
+      }
+      htmlText.append("</html>");
+
+      // replace any < that are not followed by {u, i, b, tt, font, br} with &lt;      
+      List<String> dontReplace = Arrays.asList(new String[] { "u", "i", "b", "tt", "font", "br" });
+      
+      int ltpos = 0;
+      while (ltpos != -1){
+         ltpos = htmlText.indexOf("<", ltpos + 1);
+         if (ltpos != -1 && !(ltpos + 1 < htmlText.length() && htmlText.charAt(ltpos + 1) == '/')){
+            int end = ltpos + 1;
+            while (end < htmlText.length() && Character.isLetter(htmlText.charAt(end))) end++;
+            if (!dontReplace.contains(htmlText.substring(ltpos + 1, end)))
+               htmlText.replace(ltpos, ltpos+1, "&lt;");
+         }
+      }
+            
+      label.setText(htmlText.toString());
+      if (justification == LEFT) label.setHorizontalAlignment(JLabel.LEFT);
+      else if (justification == CENTER) label.setHorizontalAlignment(JLabel.CENTER);
+      else if (justification == RIGHT) label.setHorizontalAlignment(JLabel.RIGHT);
+   }
+   
+   private String formatFromView(String text, ModifierView view){
+	   if(view == null)
+		   return text;
+	   
+	   StringBuilder prefix = new StringBuilder("");
+	   StringBuilder suffix = new StringBuilder("");
+	   
+	   prefix.append(view.getPrefix());
+	   suffix.append(view.getSuffix());
+	   
+	   if(view.isBold()){
+		   prefix.insert(0,"<b>");
+		   suffix.append("</b>");
+	   }
+	   
+	   if(view.isItalic()){
+			   prefix.insert(0,"<i>");
+			   suffix.append("</i>");
+	   }
+	   
+	   if(view.isUnderline()){
+		   prefix.insert(0,"<u>");
+		   suffix.append("</u>");
+	   }
+	   return prefix.append(text).append(suffix).toString();
+   }
+   
+    /**
+      Gets the bounding rectangle for this multiline string.
+      @param g2 the graphics context
+      @return the bounding rectangle (with top left corner (0,0))
+   */
+   public Rectangle2D getBounds(){
+	  if(isSingleLine){ 
+		  if (text.length() == 0) 
+			  return new Rectangle2D.Double();
+	  }else {
+		  if(arrayText.length == 0)
+			  return new Rectangle2D.Double();
+	  }
+      Dimension dim = label.getPreferredSize();       
+      return new Rectangle2D.Double(0, 0, dim.getWidth(), dim.getHeight());
+   }
+
+   /**
+      Draws this multiline string inside a given rectangle
+      @param g2 the graphics context
+      @param r the rectangle into which to place this multiline string
+   */
+   public void draw(Graphics2D g2, Rectangle2D r){
+      label.setFont(g2.getFont());
+      label.setBounds(0, 0, (int) r.getWidth(), (int) r.getHeight());
+      g2.translate(r.getX(), r.getY());
+      label.paint(g2);
+      g2.translate(-r.getX(), -r.getY());        
+   }
+
+   public static final int LEFT = 0;
+   public static final int CENTER = 1;
+   public static final int RIGHT = 2;
+   public static final int LARGE = 3;
+   public static final int NORMAL = 4;
+   public static final int SMALL = 5;
+
+   private String text;
+   private String[] arrayText;
+   private Modifiers modifiers;
+   private ModifierView[] modifierViews;
+   private int justification;
+   private int size;
+   private boolean isBold;
+   private transient JLabel label = new JLabel();
+   private boolean isSingleLine;
+}