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class AcroFields { /** * Sets the field value and the display string. The display string * is used to build the appearance in the cases where the value * is modified by Acrobat with JavaScript and the algorithm is * known. * * @param name the fully qualified field name or the partial name in the case of XFA forms * @param value the field value * @param display the string that is used for the appearance. If <CODE>null</CODE> * the <CODE>value</CODE> parameter will be used * @return <CODE>true</CODE> if the field was found and changed, * <CODE>false</CODE> otherwise * @throws IOException on error * @throws DocumentException on error */ public boolean setField(String name, String value, String display) throws IOException, DocumentException { if (writer == null) throw new DocumentException(MessageLocalization.getComposedMessage("this.acrofields.instance.is.read.only")); if (xfa.isXfaPresent()) { name = xfa.findFieldName(name, this); if (name == null) return false; String shortName = XfaForm.Xml2Som.getShortName(name); Node xn = xfa.findDatasetsNode(shortName); if (xn == null) { xn = xfa.getDatasetsSom().insertNode(xfa.getDatasetsNode(), shortName); } xfa.setNodeText(xn, value); } Item item = fields.get(name); if (item == null) return false; PdfDictionary merged = item.getMerged( 0 ); PdfName type = merged.getAsName(PdfName.FT); if (PdfName.TX.equals(type)) { PdfNumber maxLen = merged.getAsNumber(PdfName.MAXLEN); int len = 0; if (maxLen != null) len = maxLen.intValue(); if (len > 0) value = value.substring(0, Math.min(len, value.length())); } if (display == null) display = value; if (PdfName.TX.equals(type) || PdfName.CH.equals(type)) { PdfString v = new PdfString(value, PdfObject.TEXT_UNICODE); for (int idx = 0; idx < item.size(); ++idx) { PdfDictionary valueDic = item.getValue(idx); valueDic.put(PdfName.V, v); valueDic.remove(PdfName.I); markUsed(valueDic); merged = item.getMerged(idx); merged.remove(PdfName.I); merged.put(PdfName.V, v); PdfDictionary widget = item.getWidget(idx); if (generateAppearances) { PdfAppearance app = getAppearance(merged, display, name); if (PdfName.CH.equals(type)) { PdfNumber n = new PdfNumber(topFirst); widget.put(PdfName.TI, n); merged.put(PdfName.TI, n); } PdfDictionary appDic = widget.getAsDict(PdfName.AP); if (appDic == null) { appDic = new PdfDictionary(); widget.put(PdfName.AP, appDic); merged.put(PdfName.AP, appDic); } appDic.put(PdfName.N, app.getIndirectReference()); writer.releaseTemplate(app); } else { widget.remove(PdfName.AP); merged.remove(PdfName.AP); } markUsed(widget); } return true; } else if (PdfName.BTN.equals(type)) { PdfNumber ff = item.getMerged(0).getAsNumber(PdfName.FF); int flags = 0; if (ff != null) flags = ff.intValue(); if ((flags & PdfFormField.FF_PUSHBUTTON) != 0) { //we'll assume that the value is an image in base64 Image img; try { img = Image.getInstance(Base64.decode(value)); } catch (Exception e) { return false; } PushbuttonField pb = getNewPushbuttonFromField(name); pb.setImage(img); replacePushbuttonField(name, pb.getField()); return true; } PdfName v = new PdfName(value); ArrayList<String> lopt = new ArrayList<String>(); PdfArray opts = item.getValue(0).getAsArray(PdfName.OPT); if (opts != null) { for (int k = 0; k < opts.size(); ++k) { PdfString valStr = opts.getAsString(k); if (valStr != null) lopt.add(valStr.toUnicodeString()); else lopt.add(null); } } int vidx = lopt.indexOf(value); PdfName vt; if (vidx >= 0) vt = new PdfName(String.valueOf(vidx)); else vt = v; for (int idx = 0; idx < item.size(); ++idx) { merged = item.getMerged(idx); PdfDictionary widget = item.getWidget(idx); PdfDictionary valDict = item.getValue(idx); markUsed(item.getValue(idx)); valDict.put(PdfName.V, vt); merged.put(PdfName.V, vt); markUsed(widget); if (isInAP(widget, vt)) { merged.put(PdfName.AS, vt); widget.put(PdfName.AS, vt); } else { merged.put(PdfName.AS, PdfName.Off); widget.put(PdfName.AS, PdfName.Off); } } return true; } return false; }
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