aboutsummaryrefslogtreecommitdiff
path: root/js/lib/NJUtils.js
blob: b35e29bccee4a52ad339a262a9493be2549b804f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc.  All Rights Reserved.
</copyright> */

var Montage = require("montage/core/core").Montage,
    Component = require("montage/ui/component").Component,
    Uuid = require("montage/core/uuid").Uuid,
    ElementModel        = require("js/models/element-model").ElementModel,
    Properties3D    = require("js/models/properties-3d").Properties3D,
    ShapeModel    = require("js/models/shape-model").ShapeModel,
    ControllerFactory   = require("js/controllers/elements/controller-factory").ControllerFactory;

exports.NJUtils = Montage.create(Component, {

    /* =============== DOM Access ================ */
    
    ///// Quick "getElementById"
    $ : {
        value: function(id, doc) {
            doc = doc || document;
            return doc.getElementById(id);
        }
    },
    
    ///// Quick "getElementsByClassName" which also returns as an Array
    ///// Can return as NodeList by passing true as second argument
    $$ : {
        value: function(className, asNodeList, doc) {
            doc = doc || document;
            var list = doc.getElementsByClassName(className);
            return (asNodeList) ? list : this.toArray(list);
        }
    },
    
    ///// Get child nodes of element
    ///// Omit filter to only return element nodes
    ///// Pass in filter function to minimize collection, or
    ///// set to true to include all nodes
    children : {
        value : function(el, filter) {
            var f = filter || function(item) {
        		return item.nodeType === 1;
        	};
        	return this.toArray(el.childNodes).filter(f);
        }
    },
    
     /* ============= DOM Manipulation ============= */
    
    ///// Creates and returns text node from string
    textNode : {
        value: function(text) {
            return document.createTextNode(text);
        }
    },

    ///// Quick "createElement" function "attr" can be classname or object
    ///// with attribute key/values
    ///// Support for data attributes
    ///// Support user/ninja document
    make: {
        value: function(tag, attr, doc) {
            var _doc, el;

            _doc = doc ? doc.model.views.design.document : document;
            el = _doc.createElement(tag);
            this.decor(el, attr);

            return el;
        }
    },
    
    decor: {
        value: function(el, attr) {
            if (typeof attr === 'object') {
                for (var a in attr) {
                    if (attr.hasOwnProperty(a)) {
                        if(a.indexOf("data-") > -1) {
                            el.setAttribute(a, attr[a]);
                        } else {
                            el[a] = attr[a];
                        }
                    }
                }
            } else if (typeof attr === 'string') {
                el.className = (el.className + ' ' + attr).trim();
            }
        }
    },

    // TODO: Find a better place for this method
    stylesFromDraw: {
        value: function(element, width, height, drawData, pos) {
            var styles = {};

            styles['position'] = pos ? pos: "absolute";
            styles['left'] = (Math.round(drawData.midPt[0] - 0.5 * width)) - this.application.ninja.currentDocument.model.domContainer.offsetLeft + 'px';
            styles['top'] = (Math.round(drawData.midPt[1] - 0.5 * height)) - this.application.ninja.currentDocument.model.domContainer.offsetTop + 'px';
            styles['width'] = width + 'px';
            styles['height'] = height + 'px';

            // TODO: Check why Canvas has different tranform styles from default.
            if(!MathUtils.isIdentityMatrix(drawData.planeMat)) {
                styles['-webkit-transform-style'] = 'preserve-3d';
                styles['-webkit-transform'] = this.getElementMatrix(drawData.planeMat, drawData.midPt);
            }

            if(element.nodeName === "CANVAS") {
                element.width = width;
                element.height = height;
                delete styles['width'];
                delete styles['height'];

                styles['-webkit-transform-style'] = 'preserve-3d';
            }

            return styles;
        }
    },

    // Get the matrix for the actual element being added to the user document.
    // TODO: Find a better place for this method
    getElementMatrix: {
        value: function(planeMat, midPt) {
            var divMat, flatMat, flatMatSafe;
            // we should not need to worry about divide by zero below since we snapped to the point
            divMat = planeMat.slice(0);
            divMat[12] = 0.0;
            divMat[13] = 0.0;
            //divMat[14] = 0.0;
            divMat[14] = midPt[2];

            // set the left and top of the element such that the center of the rectangle is at the mid point
            this.application.ninja.stage.setStageAsViewport();

            flatMat = divMat;
            flatMatSafe = MathUtils.scientificToDecimal(flatMat, 10);

            return "matrix3d(" + flatMatSafe + ")";
        }
    },

    ///// Removes all child nodes and returns node
    ///// Accepts a single node, or an array of dom nodes
    empty : {
        value: function(node) {
            var elements = [],
                self = this;
            if (node.constructor === Array) {
                node.forEach(function(el) { self.empty(el) });
            } else {
                this.toArray(node.childNodes).forEach(function(child) {
                    child.parentNode.removeChild(child);
                });
            }

            return node;
        }
    },
    
    queryParentSelector : {
    	value: function(el, strSelector) {
			// queryParentSelector:
			// Given a DOM element el (required), walk up the DOM tree
			// and find the first parent that matches selector strSelector (required).
			// Returns: The element that matches, or false if there is no match
			// or if insufficient parameters are supplied.
			
			if ((typeof(el) === "undefined") || (typeof(strSelector) === "undefined")) {
				// Parameters are required, m'kay?
				return false;
			} else if ((typeof(el) !== "object") || (typeof(strSelector) !== "string" )) {
				// You also have to use the right parameters.
				return false;
			}
			
			// First, get an empty clone of the parent.
			var myParent = el.parentNode;
			var clone = myParent.cloneNode(false);
			if (clone === null) {
				return false;
			}
			
			// If we're at the top of the DOM, our clone will be an htmlDocument.
			// htmlDocument has no tagName.
			if (typeof(clone.tagName) !== "undefined") {
				// create a bogus div to use as a base for querySelector
				var temp = document.createElement("div");
				
				// Append the clone to the bogus div
				temp.appendChild(clone);
				
				// Now we can use querySelector!  Sweet.
				var selectorTest = temp.querySelector(strSelector);
				
				// What has querySelector returned?
				if (selectorTest === null) {
					// No match, so recurse.
					return this.queryParentSelector(myParent, strSelector);
				} else {
					// Match! Return the element.
					return myParent;
				}
			} else {
				// We're at the top of the DOM so we're done.
				return false;
			}
		}
    	
    },

    // Returns the numerical value and unit string from a string.
    // Useful for element properties.
    // 100px will return the following array: [100, px]
    getValueAndUnits: {
        value: function(input) {
            var numberValue = parseFloat(input);

            // Ignore all whitespace, digits, negative sign and "." when looking for units label
            // The units must come after one or more digits
            var objRegExp = /(\-*\d+\.*\d*)(\s*)(\w*\%*)/;
            var unitsString = input.replace(objRegExp, "$3");
            if(unitsString) {
                var noSpaces = /(\s*)(\S*)(\s*)/;
                // strip out spaces and convert to lower case
                var match = (unitsString.replace(noSpaces, "$2")).toLowerCase();
            }

            return [numberValue, match];
        }
    },

    /* ================= Style methods ================= */
    
    ///// Get computed height of element
    height : {
        value: function(node, pseudo) {
            return node.ownerDocument.defaultView.getComputedStyle(node, pseudo).getPropertyValue('height');
        }
    },
    
    /* ================= Array methods ================= */

    ///// Return an array from an array-like object
    toArray : {
        value: function(arrayLikeObj) {
            return Array.prototype.slice.call(arrayLikeObj);
        }
    },
    
    /* ================= String methods ================= */
    
    ///// Return the last part of a path (e.g. filename)
    getFileNameFromPath : {
        value: function(path) {
            path = path.replace(/[/\\]$/g,"");
            path = path.replace(/\\/g,"/");
            return path.substr(path.lastIndexOf('/') + 1);
        }
    },
    /***
     * file name validation
     */
    isValidFileName:{
        value: function(fileName){
            var status = false;
            if(fileName !== ""){
                fileName = fileName.replace(/^\s+|\s+$/g,"");
                status = !(/[/\\]/g.test(fileName));
                if(status && navigator.userAgent.indexOf("Macintosh") != -1){//for Mac files beginning with . are hidden
                    status = !(/^\./g.test(fileName));
                }
            }
            return status;
        }
    },

    /* ================= misc methods ================= */

    // Generates an alpha-numeric random number
    // len: number of chars
    // default length is '8'
    generateRandom: {
        value: function(len) {
            var length;
            len ? length = len : length = 8;
            
            return Uuid.generate().substring(0,length);
        }
    }
    
});