Close #62

Author: Open Lowcode SAS

src/org/openlowcode/tools/pdf/DocumentTableOfContent.java

@@ -94,6 +94,7 @@ public void setParentDocument(PDFDocument document) {
 
 	@Override
 	public void initialize() {
+		if (parentdocument==null) throw new RuntimeException("Table of content has not been added correctly to Page Band.");
 		for (int i = 0; i < parentdocument.getPartsNumber(); i++) {
 			PDFPart thispart = parentdocument.getPart(i);
 			if (thispart instanceof PDFPageBand) {
@@ -104,6 +105,14 @@ public void initialize() {
 						this.content.add((SectionHeader) (section));
 				}
 			}
+			if (thispart instanceof PDFPage) {
+				PDFPage thispage = (PDFPage) thispart;
+				PagedLabel[] labelsforpage = thispage.getTOCLabelsForPage();
+				if (labelsforpage!=null) for (int j=0;j<labelsforpage.length;j++) {
+					this.content.add(labelsforpage[j]);
+					
+				}
+			}
 		}
 
 	}

src/org/openlowcode/tools/pdf/PDFPage.java

@@ -113,7 +113,9 @@ private interface PageExecutable {
 	private PDPage page;
 	private PDPageContentStream contentStream;
 	private PDDocument document;
-
+	private ArrayList<PagedLabel> toclabelsforpage;
+	
+	
 	/**
 	 * This method should only be called during the final layout. Please use the
 	 * method PDFPage.drawCalculatedText
@@ -377,6 +379,7 @@ public PDFPage(boolean portrait, float leftrightmargin, float topbottommargin, b
 
 		this.topatzero = topatzero;
 		widgetstoprint = new ArrayList<PageExecutable>();
+		toclabelsforpage = new ArrayList<PagedLabel>();
 	}
 
 	public void addHeader(PDFPageBandHeaders header) throws IOException {
@@ -408,6 +411,7 @@ public PDFPage(
 		this.topatzero = topatzero;
 
 		widgetstoprint = new ArrayList<PageExecutable>();
+		toclabelsforpage = new ArrayList<PagedLabel>();
 	}
 
 	/**
@@ -2103,6 +2107,10 @@ public static String remove(String text) {
 		return b.toString();
 	}
 
+	/**
+	 * @param contentStream
+	 * @param text
+	 */
 	public static void securedShowText(PDPageContentStream contentStream, String text) {
 		try {
 			contentStream.showText(remove(text));
@@ -2112,6 +2120,23 @@ public static void securedShowText(PDPageContentStream contentStream, String tex
 		}
 	}
 
+	/**
+	 * @return all the labels to be inserted in the table of content for this page
+	 */
+	public PagedLabel[] getTOCLabelsForPage() {
+		return toclabelsforpage.toArray(new PagedLabel[0]);
+	}
+	
+	/**
+	 * Adds a label for this page to be added in table of content
+	 * 
+	 * @param label text of the label
+	 * @param offset offset in mm
+	 */
+	public void setTOCLabelForPage(String label,float offset) {
+		toclabelsforpage.add(new PagedLabelInPage(label,offset));
+	}
+	
 	@Override
 	protected int getPageNumber() {
 		// only a page is used by a PDFPage
@@ -2129,5 +2154,33 @@ protected void layoutPages(int pagesbefore) {
 		this.pageindex = pagesbefore + 1;
 
 	}
+	
+	private class PagedLabelInPage implements PagedLabel {
+
+		private String label;
+		private float offset;
+
+		public PagedLabelInPage(String label,float offset) {
+			this.label = label;
+			this.offset = offset;
+		}
+		
+		@Override
+		public String getLabel() {
+			return label;
+		}
+
+		@Override
+		public int getPageNumber() {
+			return getPageIndex();
+		}
+
+		@Override
+		public float getOriginalOffset() {
+			return offset;
+		}
+		
+	}
+	
 
 }

src/org/openlowcode/tools/pdf/PDFPageBand.java

@@ -172,8 +172,8 @@ protected void layoutPages(int pagesbefore) throws IOException {
 	 * @param sectiontoprint
 	 */
 	public void printNewSection(PDFPageBandSection sectiontoprint) throws IOException {
+		if (sectiontoprint==null) throw new RuntimeException("Adding null section in page band ");
 		this.sections.add(sectiontoprint);
-		sectiontoprint.setParentDocument(this.getParent());
 	}
 
 	/**
@@ -234,6 +234,8 @@ public PartialPrintFeedback(float newcursor, boolean finished) {
 
 	@Override
 	protected void initialize() {
+		for (int i = 0; i < this.sections.size(); i++)
+			this.sections.get(i).setParentDocument(this.getParent());
 		for (int i = 0; i < this.sections.size(); i++)
 			this.sections.get(i).initialize();
 	}