list(head, last, tail, clusterBy, compact), range(listPara)

alexmerfi · May 21, 2013 · 9f76db4 · 9f76db4
1 parent 908bef0
commit 9f76db4
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diff --git a/summernote.js b/summernote.js
@@ -9,7 +9,7 @@
   var bMac = navigator.appVersion.indexOf('Mac') > -1; 
 
   /**
-   * iter
+   * iter utils
    */
   var iter = function() {
     var hasAttr = function(sAttr) {
@@ -26,7 +26,41 @@
   }();
 
   /**
-   * dom
+   * list utils
+   */
+  var list = function() {
+    var head = function(array) { return array[0]; };
+    var last = function(array) { return array[array.length - 1]; };
+    var tail = function(array) { return array.slice(1); };
+
+    var clusterBy = function(array, fn) {
+      if (array.length === 0) { return []; }
+      var aTail = tail(array);
+      return aTail.reduce(function (memo, v) {
+        var aLast = last(memo);
+        if (fn(last(aLast), v)) {
+          aLast[aLast.length] = v;
+        } else {
+          memo[memo.length] = [v];
+        }
+        return memo;
+      }, [[head(array)]]);
+    };
+
+    var compact = function(array) {
+      var aResult = [];
+      for(var idx = 0; idx < array.length; idx ++) {
+        if (array[idx]) { aResult.push(array[idx]); };
+      };
+      return aResult;
+    };
+
+    return { head: head, last: last, tail: tail, 
+             compact: compact, clusterBy: clusterBy };
+  }();
+
+  /**
+   * dom utils
    */
   var dom = function() {
     // nodeName of element are always uppercase.
@@ -88,9 +122,9 @@
     /**
      * listBetween
      * listing all Nodes between nodeA and nodeB
+     * FIXME: nodeA and nodeB must be sorted, use comparePoints later.
      */
     var listBetween = function(nodeA, nodeB) {
-      //FIXME: must nodeA and nodeB be sorted, use comparePoints later.
       var aNode = [];
       var elAncestor = commonAncestor(nodeA, nodeB);
       //TODO: IE8, createNodeIterator
@@ -149,9 +183,21 @@
       } // TODO: handle IE8+ TextRange
     }
 
-    this.getParas = function() {
+    /**
+     * listPara
+     *
+     * listing paragraphs on range
+     */
+    this.listPara = function() {
       var aNode = dom.listBetween(sc, ec);
-      //filter out aPara
+      // TODO: IE8 use es5-shim(https://github.com/kriskowal/es5-shim) later
+      var aPara = list.compact(aNode.map(function(node) {
+        return dom.ancestor(node, dom.isPara);
+      }));
+      var aaClustered = list.clusterBy(aPara, function(nodeA, nodeB) {
+        return nodeA === nodeB;
+      });
+      return aaClustered.map(list.head);
     };
 
     /**
@@ -257,8 +303,8 @@
 
     this.lineHeight = function(sValue) {
       var rng = new Range();
-      var aPara = rng.getParas();
-      //lineHeight
+      var aPara = rng.listPara();
+      console.log(aPara);
     };
 
     this.unlink = function() {
@@ -820,9 +866,7 @@
     },
     // inner object for test
     summernoteInner : function() {
-      return {
-        dom: dom
-      };
+      return { dom: dom, list: list };
     }
   });
 })(jQuery); // jQuery
diff --git a/test/list.spec.html b/test/list.spec.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>summernote :: list.spec</title>
+<link rel="stylesheet" href="qunit-1.11.0.css">
+</head>
+<body>
+<div id="qunit"></div>
+<div id="qunit-fixture"></div>
+<script src="qunit-1.11.0.js"></script>
+<script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
+<script src="../summernote.js"></script>
+<script src="list.spec.js"></script>
+</body>
+</html>
diff --git a/test/list.spec.js b/test/list.spec.js
@@ -0,0 +1,23 @@
+/**
+ * list.spec.js
+ * (c) 2013~ Youngteac Hong
+ * summernote may be freely distributed under the MIT license./
+ */
+var list = $.fn.summernoteInner().list;
+
+test('list.compact', function() {
+  deepEqual(list.compact([0, 1, false, 2, '', 3]), [1,2,3],
+            'falsey values of `array` removed');
+});
+
+test('list.clusterBy', function() {
+  var aaClustered = list.clusterBy([1, 1, 2, 2, 3], function(itemA, itemB) {
+    return itemA === itemB;
+  });
+  deepEqual([[1, 1], [2, 2], [3]], aaClustered, 'clusterBy equality 1');
+
+  var aaClustered = list.clusterBy([1, 2, 2, 1, 3], function(itemA, itemB) {
+    return itemA === itemB;
+  });
+  deepEqual([[1], [2, 2], [1], [3]], aaClustered, 'clusterBy equality 2');
+});