1 files changed, 89 insertions, 0 deletions
diff --git a/epubview/highlight_words.js b/epubview/highlight_words.js
new file mode 100644
index 0000000..ffa5e9a
--- /dev/null
+++ b/epubview/highlight_words.js
@@ -0,0 +1,89 @@
+    var parentElement;
+    var actualChild;
+    var actualWord;
+    var words;
+    var originalNode = null;
+    var modifiedNode = null;
+
+    function trim(s) { 
+      s =  ( s || '' ).replace( /^\s+|\s+$/g, '' ); 
+      return s.replace(/[\n\r\t]/g,' ');
+    }
+
+
+    function init() {
+        parentElement = document.getElementsByTagName("body")[0];
+        actualChild = new Array();
+        actualWord = 0;
+        actualChild.push(0);
+    }
+
+    function highLightNextWordInt() {
+        var nodeList = parentElement.childNodes;
+        ini_posi = actualChild[actualChild.length - 1];
+        for (var i=ini_posi; i < nodeList.length; i++) {
+            var node = nodeList[i];            
+            if ((node.nodeName == "#text") && (trim(node.nodeValue) != '')) {
+                node_text =  trim(node.nodeValue);
+                words = node_text.split(" ");
+                if (actualWord < words.length) {
+                    originalNode = document.createTextNode(node.nodeValue);
+                    
+                    prev_text = '';
+                    for (var p1 = 0; p1 < actualWord; p1++) {
+                        prev_text = prev_text + words[p1] + " ";
+                    }
+                    var textNode1 = document.createTextNode(prev_text);
+                    var textNode2 = document.createTextNode(words[actualWord]+" ");
+                    post_text = '';
+                    for (var p2 = actualWord + 1; p2 < words.length; p2++) {
+                        post_text = post_text + words[p2] + " ";
+                    }
+                    var textNode3 = document.createTextNode(post_text);
+                    var newParagraph = document.createElement('p');
+                    var boldNode = document.createElement('b');
+                    boldNode.appendChild(textNode2);
+                    newParagraph.appendChild(textNode1);    
+                    newParagraph.appendChild(boldNode);    
+                    newParagraph.appendChild(textNode3);    
+
+                    parentElement.insertBefore(newParagraph, node);
+                    parentElement.removeChild(node);
+                    modifiedNode = newParagraph;
+
+                    actualWord = actualWord + 1;
+                    if (actualWord >=  words.length) {
+                        actualChild.pop();
+                        actualChild[actualChild.length - 1] = actualChild[actualChild.length - 1] + 2;
+                        actualWord = 0;
+                        parentElement = parentElement.parentNode;
+                    }
+                }    
+                throw "exit"; 
+            } else {
+                if (node.childNodes.length > 0) {
+                    parentElement = node;
+                    actualChild.push(0);
+                    actualWord = 0;
+                    highLightNextWordInt();
+                    actualChild.pop();
+                }
+            }
+        }
+        return;
+    }
+
+
+    function highLightNextWord() {
+        if (typeof parentElement  == "undefined") {
+            init();
+        }
+        if (originalNode != null) {
+            modifiedNode.parentNode.insertBefore(originalNode, modifiedNode);
+            modifiedNode.parentNode.removeChild(modifiedNode);
+        } 
+        try {
+            highLightNextWordInt();
+        } catch(er) {
+        }
+    }