From 7deea014cb2487a808a54c37646b74f5d255f575 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Aleksander=20=C5=81ukasz?=
 <aleksander.lukasz@nowoczesnapolska.org.pl>
Date: Wed, 14 Aug 2013 13:31:10 +0200
Subject: [PATCH] canvas api: Unwraping the whole content of a
 DocumentTextElement

---
 modules/documentCanvas/canvas/canvas.test3.js | 38 +++++++++++++++++
 .../documentCanvas/canvas/documentElement.js  | 41 +++++++++++++++++++
 2 files changed, 79 insertions(+)

diff --git a/modules/documentCanvas/canvas/canvas.test3.js b/modules/documentCanvas/canvas/canvas.test3.js
index f96e0ff..1908574 100644
--- a/modules/documentCanvas/canvas/canvas.test3.js
+++ b/modules/documentCanvas/canvas/canvas.test3.js
@@ -810,6 +810,44 @@ describe('Canvas', function() {
                     expect(sectionChildren[0].getText()).to.equal('Sometext');
                 });
             });
+
+            describe('unwrapping the whole content of a DocumentNodeElement', function() {
+                it('removes a DocumentNodeElement but keeps its content', function() {
+                    var c = canvas.fromXML('<section><div>Alice has<span>a</span> cat</div></section>'),
+                        section = c.doc(),
+                        div = c.doc().children()[0],
+                        span = div.children()[1];
+
+                    var range = div.unwrapContents(),
+                        sectionChildren = section.children();
+
+                    expect(sectionChildren).to.have.length(3);
+                    expect(sectionChildren[0].getText()).to.equal('Alice has');
+                    expect(sectionChildren[1].sameNode(span)).to.equal(true, 'span ok');
+                    expect(sectionChildren[2].getText()).to.equal(' cat');
+
+                    expect(range.element1.sameNode(sectionChildren[0])).to.equal(true, 'range start ok');
+                    expect(range.element2.sameNode(sectionChildren[2])).to.equal(true, 'range end ok');
+                });
+                it('merges text elements on the boundries', function() {
+                    var c = canvas.fromXML('<section>Alice<div>has a <span>cat</span>!</div>!!</section>'),
+                        section = c.doc(),
+                        div = c.doc().children()[1],
+                        span = div.children()[1];
+
+                    var range = div.unwrapContents(),
+                        sectionChildren = section.children();
+
+                    expect(sectionChildren).to.have.length(3);
+                    expect(sectionChildren[0].getText()).to.equal('Alicehas a ');
+                    expect(sectionChildren[1].sameNode(span)).to.equal(true, 'span ok');
+                    expect(sectionChildren[2].getText()).to.equal('!!!');
+
+                    expect(range.element1.sameNode(sectionChildren[0])).to.equal(true, 'range start ok');
+                    expect(range.element2.sameNode(sectionChildren[2])).to.equal(true, 'range end ok');
+                });
+            });
+            
         });
 
         describe('Lists api', function() {
diff --git a/modules/documentCanvas/canvas/documentElement.js b/modules/documentCanvas/canvas/documentElement.js
index b7e8352..7ca7e59 100644
--- a/modules/documentCanvas/canvas/documentElement.js
+++ b/modules/documentCanvas/canvas/documentElement.js
@@ -216,6 +216,44 @@ $.extend(DocumentNodeElement.prototype, {
         this.canvas = null;
         return this;
     },
+    unwrapContents: function() {
+        var parent = this.parent();
+        if(!parent)
+            return;
+
+        var parentChildren = parent.children(),
+            myChildren = this.children(),
+            myIdx = parent.childIndex(this);
+
+        if(myChildren.length === 0)
+            return this.detach();
+
+        var moveLeftRange, moveRightRange;
+
+        if(myIdx > 0 && (parentChildren[myIdx-1] instanceof DocumentTextElement) && (myChildren[0] instanceof DocumentTextElement)) {
+            parentChildren[myIdx-1].appendText(myChildren[0].getText());
+            myChildren[0].detach();
+            moveLeftRange = true;
+        }
+
+        if(myIdx < parentChildren.length - 1 && (parentChildren[parentChildren.length-1] instanceof DocumentTextElement) && (myChildren[myChildren.length-1] instanceof DocumentTextElement)) {
+            parentChildren[parentChildren.length-1].prependText(myChildren[myChildren.length-1].getText());
+            myChildren[myChildren.length-1].detach();
+            moveRightRange = true;
+        }
+
+        var childrenLength = this.children().length;
+        this.children().forEach(function(child) {
+            this.before(child);
+        }.bind(this));
+
+        this.detach();
+
+        return {
+            element1: parent.children()[myIdx + (moveLeftRange ? -1 : 0)],
+            element2: parent.children()[myIdx + childrenLength-1 + (moveRightRange ? 1 : 0)]
+        };
+    },
     data: function() {
         var dom = this.dom(),
             args = Array.prototype.slice.call(arguments, 0);
@@ -477,6 +515,9 @@ $.extend(DocumentTextElement.prototype, {
     appendText: function(text) {
         this.dom().contents()[0].data += text;
     },
+    prependText: function(text) {
+        this.dom().contents()[0].data = text + this.dom().contents()[0].data;
+    },
     getText: function() {
         return this.dom().text().replace(utils.unicode.ZWS, '');
     },
-- 
2.20.1