Blame view

controllets/draggable-element-controllet/draggable-element-controllet.html 12.1 KB
938d1928   Luigi Serra   Update documentat...
1
2
  <!--

  @license

584d6ecd   Luigi Serra   Update components...
3
      The MIT License (MIT)

938d1928   Luigi Serra   Update documentat...
4
  

584d6ecd   Luigi Serra   Update components...
5
      Copyright (c) 2015 Dipartimento di Informatica - Università di Salerno - Italy

938d1928   Luigi Serra   Update documentat...
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
  

      Permission is hereby granted, free of charge, to any person obtaining a copy

      of this software and associated documentation files (the "Software"), to deal

      in the Software without restriction, including without limitation the rights

      to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

      copies of the Software, and to permit persons to whom the Software is

      furnished to do so, subject to the following conditions:

  

      The above copyright notice and this permission notice shall be included in

      all copies or substantial portions of the Software.

  

      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

      IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

      FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

      AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

      LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

      OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

      THE SOFTWARE.

  -->

ae17a8dc   Luigi Serra   Controllet and da...
25
26
27
28
29
30
31
32
  <!--

  * Created by :

  * Luigi Serra - luigser@gmail.com

  * Andrea Petta - andrpet@gmail.com

  *

  * Copyright (c) 2015 Dipartimento di Informatica - Università di Salerno - Italy

  *

  -->

938d1928   Luigi Serra   Update documentat...
33
  

73bcce88   luigser   COMPONENTS
34
35
36
  <link rel="import" href="../../bower_components/polymer/polymer.html">

  <link rel="import" href="../../bower_components/paper-styles/color.html">

  

938d1928   Luigi Serra   Update documentat...
37
38
39
40
41
42
43
  <!--

  `draggable-element-controllet` is a controllet that represents a draggable element. It can be a target or source. When it's a suorce is possible to drag the content in to a

   container( a draggable-element-controllet with target feature active). When it's a target it manage the drag-and event to get the the text and id value of the source content.

   During the dragging phase all the target border will be emphasize to facilitate the drop phase.

  

  Example:

  

4e7eacf4   Luigi Serra   Controllets and d...
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
      SOURCE

  

      <draggable-element-controllet

         identifier="MyId"

         label="MyLablel">

      </draggable-element-controllet>

  

      TARGET

  

      <draggable-element-controllet

         is-target="true"

         heading="MyHeading"

         description="MyDescription"

         number="MyIndex">

      </draggable-element-controllet>

938d1928   Luigi Serra   Update documentat...
59
60
61
62
63
64
65
66
67
  

  

  @element draggable-element-controllet

  @status beta

  @homepage

  @group controllets

  -->

  

  

73bcce88   luigser   COMPONENTS
68
69
70
71
  <dom-module id="draggable-element-controllet">

      <template>

  

          <style is="custom-style">

73bcce88   luigser   COMPONENTS
72
73
74
75
76
77
78
79
  

              .drag-content-target{

                  height: 12.5em;

                  width: 13.5em;

                  font-weight: bolder;

              }

  

              .drag-content-source{

74249687   Luigi Serra   Cross browser con...
80
                  height: 1.5em;

73bcce88   luigser   COMPONENTS
81
                  width: 12.5em;

74249687   Luigi Serra   Cross browser con...
82
83
84
85
                 /* min-height: 20px;

                  min-width: 70px;

                  max-height: 20px;

                  max-width: 70px;*/

73bcce88   luigser   COMPONENTS
86
87
88
89
90
91
              }

  

              .onTrackOnTarget{

                  position: relative;

                  float: left;

                  margin : 0.625em;

74249687   Luigi Serra   Cross browser con...
92
                  height: 1.6em;

73bcce88   luigser   COMPONENTS
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
                  width: 13.5em;

                  background: #fff;

                  padding: 1em;

                  border-style: solid;

                  border-width : 0.2625em;

                  border-color : var(--paper-blue-500);

                  border-radius: 0.425rem;

                  box-shadow: 0 0.325em 0.3125em 0 rgba(0, 0, 0, 0.25);

                  overflow: hidden;

              }

  

              .draggable-card{

                  position: relative;

                  float: left;

                  margin : 0.625em;

74249687   Luigi Serra   Cross browser con...
108
                  height: 1.5em;

73bcce88   luigser   COMPONENTS
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
                  width: 13.5em;

                  border-width : 0.0625em

                  background: #fff;

                  border-radius: 0.425rem;

                  box-shadow: 0 0.325em 0.3125em 0 rgba(0, 0, 0, 0.25);

                  padding: 1em;

                  overflow: hidden;

              }

  

              .avatar {

                  display: inline-block;

                  position: relative;

                  float: left;

                  height: 2em;

                  width: 2em;

                  border-radius: 50%;

                  background: var(--paper-blue-500);

                  color: white;

                  line-height: 2em;

                  font-size: 0.9375em;

                  text-align: center;

              }

  

              .heading{

                  width: 12.5em;

              }

  

              .big {

                  display: inline-block;

                  position: relative;

                  float: left;

                  font-size: 1em;

                  padding: 0.5em 0.25em 0.5em;

                  color: var(--google-grey-500);

              }

  

              .medium {

                  font-size: 0.8125em;

                  padding-bottom: 0px;

                  display: inline-block;

                  width: 12.5em;

              }

  

              .unselectable {

                  -webkit-touch-callout: none;

                  -webkit-user-select: none;

                  -khtml-user-select: none;

                  -moz-user-select: none;

                  -ms-user-select: none;

                  user-select: none;

              }

  

73bcce88   luigser   COMPONENTS
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
          </style>

  

          <template is="dom-if" if="{{isTarget}}">

              <div class="drag-content-target" draggable="false">

                  <div class="card-content">

                      <div class="heading">

                          <div class="avatar">{{number}}</div>

                          <div class="big">{{heading}}</div><br>

                      </div>

                      <div class="medium">{{description}}</div>

                  </div>

                  <div id="target_dragged_identifier" class='draggable-card dd-content-target unselectable'></div>

              </div>

          </template>

  

          <template is="dom-if" if="{{!isTarget}}">

74249687   Luigi Serra   Cross browser con...
177
              <div id="source" class="drag-content-source" draggable="true" ondragstart="event.dataTransfer.setData('text/plain', 'This text may be dragged')" on-track="_handleTrack" on-drag="_handleOnDrag" on-dragstart="_handleStartDrag" on-dragenter="_handleEnterDrag">

73bcce88   luigser   COMPONENTS
178
179
180
181
182
183
184
185
186
187
188
189
                  <div id="{{identifier}}" class='draggable-card unselectable'>{{label}}</div>

              </div>

          </template>

  

      </template>

  

      <script>

  

          Polymer({

  

              is: 'draggable-element-controllet',

  

938d1928   Luigi Serra   Update documentat...
190
191
192
193
194
195
              /**

               * Fired when the user drags a suorce in to a target element.

               *

               * @event draggable-element-controllet_content-dragged

               */

  

73bcce88   luigser   COMPONENTS
196
197
198
              targets : null,

  

              properties: {

938d1928   Luigi Serra   Update documentat...
199
200
201
202
203
204
205
                  /**

                   * It's a boolean flag to give to the controllet the role of target.

                   *

                   * @attribute isTarget

                   * @type Boolean

                   * @default false

                   */

73bcce88   luigser   COMPONENTS
206
207
208
209
                  isTarget : {

                      type : Boolean,

                      value: false

                  },

938d1928   Luigi Serra   Update documentat...
210
211
212
213
214
215
216
                  /**

                   * It's a string value the represent the current number of target. It will be use in the label section.

                   *

                   * @attribute number

                   * @type Strig

                   * @default '0'

                   */

73bcce88   luigser   COMPONENTS
217
218
                  number: {

                      type: String,

035bbee3   Luigi Serra   Datalets and cont...
219
                      value : "1"

73bcce88   luigser   COMPONENTS
220
                  },

938d1928   Luigi Serra   Update documentat...
221
222
223
224
225
226
227
                  /**

                   * It's the name of the target field

                   *

                   * @attribute heading

                   * @type Strig

                   * @default 'Heading'

                   */

73bcce88   luigser   COMPONENTS
228
229
230
231
                  heading : {

                      type : String,

                      value : "Heading"

                  },

938d1928   Luigi Serra   Update documentat...
232
233
234
235
236
237
238
                  /**

                   * It's the description of the target field

                   *

                   * @attribute description

                   * @type Strig

                   * @default 'Description'

                   */

73bcce88   luigser   COMPONENTS
239
240
241
242
                  description: {

                      type: String,

                      value: "Description"

                  },

938d1928   Luigi Serra   Update documentat...
243
244
245
246
247
248
249
                  /**

                   * It's the value of the source field

                   *

                   * @attribute label

                   * @type Strig

                   * @default 'Label'

                   */

73bcce88   luigser   COMPONENTS
250
251
252
253
                  label : {

                      type : String,

                      value : "Label"

                  },

938d1928   Luigi Serra   Update documentat...
254
255
256
257
258
259
260
                  /**

                   * It's the identifier associated to the source field element

                   *

                   * @attribute identifier

                   * @type Strig

                   * @default ''

                   */

73bcce88   luigser   COMPONENTS
261
262
263
264
265
266
267
268
269
270
271
272
                  identifier : {

                      type : String,

                      value : ""

                  },

  

                  value : {

                      type : String,

                      value : ""

                  }

  

              },

  

74249687   Luigi Serra   Cross browser con...
273
274
275
              ready : function(){

              },

  

73bcce88   luigser   COMPONENTS
276
              _handleStartDrag : function(e){

f974e824   Luigi Serra   Bugs fix
277
278
                  /*var target = EventUtil.getCurrentTarget(e);

                  target.style.cursor = 'move';*/

74249687   Luigi Serra   Cross browser con...
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
                  return true;

              },

  

              _handleEnterDrag : function(e){

                  /*var target = e.target;

                  if(target.draggable == false && (target.className.indexOf("dd-content-target") != -1)){

  

                      target.parentNode.parentNode.value = e.srcElement.id;

                      target.innerHTML = e.srcElement.innerText;

  

                      this.fire('draggable-element-controllet_content-dragged', {target: target, source: e.srcElement});

                  }

  

                  for (var i = 0; i < this.targets.length; i++) {

                      this.targets[i].children[0].children[1].className = "draggable-card dd-content-target unselectable style-scope draggable-element-controllet";

                  }*/

                  return false;

f974e824   Luigi Serra   Bugs fix
296
              },

938d1928   Luigi Serra   Update documentat...
297
298
299
300
301
302
303
              /**

               * Callback associated to event on-drag for the source element. When the user is dragging a source element all the target border will be emphasized.

               *

               * @method _handleOnDrag

               *

               * @param {Event} e

               */

f974e824   Luigi Serra   Bugs fix
304
              _handleOnDrag : function(e){

73bcce88   luigser   COMPONENTS
305
306
307
308
309
310
                  this.targets = document.querySelectorAll('draggable-element-controllet[is-target=true]');

                  for (var i = 0; i < this.targets.length; i++) {

                      this.targets[i].children[0].children[1].className = "onTrackOnTarget dd-content-target unselectable style-scope draggable-element-controllet";

                  }

  

              },

938d1928   Luigi Serra   Update documentat...
311
312
313
314
315
316
317
318
              /**

               * Callback associated to event on-trak for the source element. When the user stops dragging a source element the relative target is recognized and an event will be

               * fired to broadcast to all listeners the information about the current dragging operation.

               *

               * @method _handleTrack

               *

               * @param {Event} e

               */

73bcce88   luigser   COMPONENTS
319
320
321
322
323
324
325
326
              _handleTrack : function(e) {

  

                  switch(e.detail.state) {

                      case 'start':

                          break;

                      case 'track':

                          break;

                      case 'end':

74249687   Luigi Serra   Cross browser con...
327
  

73bcce88   luigser   COMPONENTS
328
                          var target = e.detail.hover();

74249687   Luigi Serra   Cross browser con...
329
  

73bcce88   luigser   COMPONENTS
330
331
                          if(target.draggable == false && (target.className.indexOf("dd-content-target") != -1)){

  

74249687   Luigi Serra   Cross browser con...
332
333
                              target.parentNode.parentNode.value = e.target.id;

                              target.innerHTML = e.target.innerHTML;

73bcce88   luigser   COMPONENTS
334
  

74249687   Luigi Serra   Cross browser con...
335
                              this.fire('draggable-element-controllet_content-dragged', {target: target, source: e.target});

73bcce88   luigser   COMPONENTS
336
337
338
339
340
341
342
343
344
345
346
347
348
349
                          }

  

                          for (var i = 0; i < this.targets.length; i++) {

                              this.targets[i].children[0].children[1].className = "draggable-card dd-content-target unselectable style-scope draggable-element-controllet";

                          }

  

                          break;

                  }

              }

          });

  

      </script>

  

  </dom-module>