From be485f59ab3a7f9d044efa09800bd7f13181874c Mon Sep 17 00:00:00 2001
From: Tim van der Meij <timvandermeij@gmail.com>
Date: Sun, 11 Sep 2016 17:04:33 +0200
Subject: [PATCH] Text widget annotations: implement maximum length and text
 alignment

Moreover, we refactor the code a bit to extract code that is shared
between the two branches and we only apply text alignment (and create
the array) when it is actually defined, since it's optional and left is
already the default.
---
 src/display/annotation_layer.js | 40 ++++++++++++++++++++-------------
 1 file changed, 25 insertions(+), 15 deletions(-)

diff --git a/src/display/annotation_layer.js b/src/display/annotation_layer.js
index df23d941a..559d1c1a4 100644
--- a/src/display/annotation_layer.js
+++ b/src/display/annotation_layer.js
@@ -29,6 +29,7 @@
 
 var AnnotationBorderStyleType = sharedUtil.AnnotationBorderStyleType;
 var AnnotationType = sharedUtil.AnnotationType;
+var isInt = sharedUtil.isInt;
 var Util = sharedUtil.Util;
 var addLinkAttributes = displayDOMUtils.addLinkAttributes;
 var LinkTarget = displayDOMUtils.LinkTarget;
@@ -427,6 +428,8 @@ var WidgetAnnotationElement = (function WidgetAnnotationElementClosure() {
  */
 var TextWidgetAnnotationElement = (
     function TextWidgetAnnotationElementClosure() {
+  var TEXT_ALIGNMENT = ['left', 'center', 'right'];
+
   function TextWidgetAnnotationElement(parameters) {
     WidgetAnnotationElement.call(this, parameters);
   }
@@ -442,26 +445,33 @@ var TextWidgetAnnotationElement = (
     render: function TextWidgetAnnotationElement_render() {
       this.container.className = 'textWidgetAnnotation';
 
+      var element = null;
       if (this.renderInteractiveForms) {
-        var input = document.createElement('input');
-        input.type = 'text';
-        input.value = this.data.fieldValue;
+        element = document.createElement('input');
+        element.type = 'text';
+        element.value = this.data.fieldValue;
 
-        this.container.appendChild(input);
+        if (isInt(this.data.maxLen)) {
+          element.maxLength = this.data.maxLen;
+        }
       } else {
-        var content = document.createElement('div');
-        content.textContent = this.data.fieldValue;
-        var textAlignment = this.data.textAlignment;
-        content.style.textAlign = ['left', 'center', 'right'][textAlignment];
-        content.style.verticalAlign = 'middle';
-        content.style.display = 'table-cell';
+        element = document.createElement('div');
+        element.textContent = this.data.fieldValue;
+        element.style.verticalAlign = 'middle';
+        element.style.display = 'table-cell';
 
-        var font = (this.data.fontRefName ?
-          this.page.commonObjs.getData(this.data.fontRefName) : null);
-        this._setTextStyle(content, font);
-
-        this.container.appendChild(content);
+        var font = null;
+        if (this.data.fontRefName) {
+          font = this.page.commonObjs.getData(this.data.fontRefName);
+        }
+        this._setTextStyle(element, font);
       }
+
+      if (isInt(this.data.textAlignment)) {
+        element.style.textAlign = TEXT_ALIGNMENT[this.data.textAlignment];
+      }
+
+      this.container.appendChild(element);
       return this.container;
     },