Add missing file

www/pad/cursor.js

@@ -0,0 +1,154 @@
+define([
+    'jquery',
+    '/common/common-ui-elements.js',
+    '/common/common-interface.js',
+    '/bower_components/chainpad/chainpad.dist.js',
+], function ($, UIElements, UI, ChainPad) {
+    var Cursor = {};
+
+    Cursor.isCursor = function (el) {
+        return typeof (el.getAttribute) === "function" &&
+                el.getAttribute('class') &&
+                /cp-cursor-position/.test(el.getAttribute('class'));
+    };
+
+    Cursor.preDiffApply = function (info) {
+        if (info.node && info.node.tagName === 'SPAN' &&
+            info.node.getAttribute('class') &&
+            /cp-cursor-position/.test(info.node.getAttribute('class'))) {
+            if (info.diff.action === 'removeElement') {
+                console.error('PREVENTING REMOVAL OF CURSOR', info.node);
+                return true;
+            }
+        }
+    };
+
+    Cursor.create = function (inner, hjsonToDom, cursorModule) {
+        var exp = {};
+
+        var cursors = {};
+
+        var makeTippy = function (cursor) {
+            /*var html = '<span class="cp-cursor-avatar">';
+            if (cursor.avatar && UIElements.getAvatar(cursor.avatar)) {
+                html += UIElements.getAvatar(cursor.avatar);
+            }
+            html += cursor.name + '</span>';
+            return html;*/
+            return cursor.name;
+        };
+
+        var makeCursor = function (id, cursor) {
+            if (cursors[id]) {
+                cursors[id].el.remove();
+                cursors[id].elstart.remove();
+                cursors[id].elend.remove();
+            }
+            cursors[id] = {
+                el: $('<span>', {
+                    'id': id,
+                    'data-type': '',
+                    title: makeTippy(cursor),
+                    'class': 'cp-cursor-position'
+                })[0],
+                elstart: $('<span>', {
+                    'id': id,
+                    'data-type': 'start',
+                    title: makeTippy(cursor),
+                    'class': 'cp-cursor-position'
+                })[0],
+                elend: $('<span>', {
+                    'id': id,
+                    'data-type': 'end',
+                    title: makeTippy(cursor),
+                    'class': 'cp-cursor-position'
+                })[0],
+            };
+            return cursors[id];
+        };
+        var deleteCursor = function (id) {
+            if (!cursors[id]) { return; }
+            cursors[id].el.remove();
+            cursors[id].elstart.remove();
+            cursors[id].elend.remove();
+            delete cursors[id];
+        };
+
+
+        var addCursorAtRange = function (cursorEl, r, cursor, type) {
+            var pos = type || 'start';
+            var p = r[pos].el.parentNode;
+            var el = cursorEl['el'+type];
+            if (cursor.color) {
+                 $(el).css('border-color', cursor.color);
+                 $(el).css('background-color', cursor.color);
+            }
+            if (r[pos].offset === 0) {
+                if (r[pos].el.nodeType === r[pos].el.TEXT_NODE) {
+                    // Text node, insert at the beginning
+                    p.insertBefore(el, p.childNodes[0] || null);
+                } else {
+                    // Other node, insert as first child
+                    r[pos].el.insertBefore(el, r[pos].el.childNodes[0] || null);
+                }
+            } else {
+                if (r[pos].el.nodeType !== r[pos].el.TEXT_NODE) { return; }
+                // Text node, we have to split...
+                var newNode = r[pos].el.splitText(r[pos].offset);
+                p.insertBefore(el, newNode);
+            }
+        };
+
+        exp.removeCursors = function () {
+            for (var id in cursors) {
+                deleteCursor(id);
+            }
+        };
+
+        exp.cursorGetter = function (hjson) {
+            cursorModule.offsetUpdate();
+            var userDocStateDom = hjsonToDom(hjson);
+            var ops = ChainPad.Diff.diff(inner.outerHTML, userDocStateDom.outerHTML);
+            return cursorModule.getNewOffset(ops);
+        };
+
+        exp.onCursorUpdate = function (data, hjson) {
+            if (data.leave) {
+                if (data.id.length === 32) {
+                    Object.keys(cursors).forEach(function (id) {
+                        if (id.indexOf(data.id) === 0) { deleteCursor(id); }
+                    });
+                }
+                deleteCursor(data.id);
+                return;
+            }
+            var id = data.id;
+            var cursorObj = data.cursor;
+
+            if (!cursorObj.selectionStart) { return; }
+
+            // 1. Transform the cursor to get the offset relative to our doc
+            // 2. Turn it into a range
+            var userDocStateDom = hjsonToDom(hjson);
+            var ops = ChainPad.Diff.diff(userDocStateDom.outerHTML, inner.outerHTML);
+            var r = cursorModule.getNewRange({
+                start: cursorObj.selectionStart,
+                end: cursorObj.selectionEnd
+            }, ops);
+            var cursorEl = makeCursor(id, cursorObj);
+            if (r.start.el === r.end.el && r.start.offset === r.end.offset) {
+                // Cursor
+                addCursorAtRange(cursorEl, r, cursorObj, '');
+            } else {
+                // Selection
+                addCursorAtRange(cursorEl, r, cursorObj, 'end');
+                addCursorAtRange(cursorEl, r, cursorObj, 'start');
+            }
+            inner.normalize();
+        };
+
+        return exp;
+    };
+
+    return Cursor;
+});