style/ui/widget-values.js.u8

function WidgetValues (c) {
  if (c) {
    this.container = c;
    this._init ();
  }
} // WidgetValues

WidgetValues.prototype._init = function () {
  var ta = this.container.getElementsByTagName ('textarea')[0];
  if (!ta) return;

  this.name = this.container.getAttribute ('data-widget-name') || ta.name || '';

  this.separatorPattern
      = new RegExp (this.container.getAttribute ('data-widget-separator')
                        || '\\s+');
  
  this.defaultValues = ta.defaultValue.length
    ? ta.defaultValue.split (this.separatorPattern) : [];
  this.initialValues = ta.value.length
    ? ta.value.split (this.separatorPattern) : [];

  this.clear ();
  this.appendValues (this.initialValues);
}; // _init

WidgetValues.prototype._clear = function () {
  this.firstField = null;
  this.lastField = null;
  this.container.innerHTML = '';
}; // _clear

WidgetValues.prototype.appendValues = function (values) {
  var self = this;
  for (var i = 0; i < values.length; i++) {
    var field = this.createField (values[i]);
    field.wvRemove = function () { self._removeField (this) };
    field.wvMoveUp = function () { self._moveUpField (this) };
    field.wvMoveDown = function () { self._moveDownField (this) };
    var parent = this.lastField ? this.lastField.parentNode : null;
    parent = parent ? parent : this.fieldsParent;
    parent.insertBefore (field, this.lastField ? this.lastField.nextSibling : null);
    this.lastField = field;
    this.firstField = this.firstField || field;
  }
}; // appendValues

WidgetValues.prototype.reset = function () {
  this.clear ();
  this.appendValues (this.defaultValues);
}; // reset

WidgetValues.prototype._removeField = function (field) {
  if (this.firstField == field) {
    this.firstField = this._getNextField (field);
  }
  if (this.lastField == field) {
    this.lastField = this._getPreviousField (field);
  }
  field.parentNode.removeChild (field);
}; // _removeField

WidgetValues.prototype._moveUpField = function (field) {
  this._swapFields (field, this._getPreviousField (field));
}; // _moveUpField

WidgetValues.prototype._moveDownField = function (field) {
  this._swapFields (field, this._getNextField (field));
}; // _moveDownField

WidgetValues.prototype._swapFields = function (f1, f2) {
  if (!f1 || !f2) return;
  var ph = document.createElement (f1.tagName || 'x');
  f1.parentNode.replaceChild (ph, f1);
  f2.parentNode.replaceChild (f1, f2);
  ph.parentNode.replaceChild (f2, ph);
}; // _swapFields

WidgetValues.prototype._getNextField = function (field) {
  var n = field.nextSibling;
  while (n != null) {
    if (this.isField (n)) {
      return n;
    }
    n = n.nextSibling;
  }
  return null;
}; // _getNextField

WidgetValues.prototype._getPreviousField = function (field) {
  var n = field.previousSibling;
  while (n != null) {
    if (this.isField (n)) {
      return n;
    }
    n = n.previousSibling;
  }
  return null;
}; // _getPreviousField

WidgetValues.prototype.createButton = function () {
  var el;

  try {
    el = document.createElement ('button');
    el.setAttribute('type', 'button');
  } catch (e) {
    el = document.createElement ('<button type=button>');
  }

  return el;
}; // createButton

WidgetValues.prototype.isField = function (n) {
  return n.wvIsField;
}; // isField


WidgetValues.prototype.createField = function (value) {
  var field = document.createElement ('div');
  field.wvIsField = true;

  var input = document.createElement ('input');
  input.name = this.name;
  input.value = value;
  field.appendChild (input);

  var removeButton = this.createButton ();
  removeButton.innerHTML = 'Remove';
  removeButton.onclick = function () { field.wvRemove () };
  field.appendChild (removeButton);

  var moveUpButton = this.createButton ();
  moveUpButton.innerHTML = 'Move up';
  moveUpButton.onclick = function () { field.wvMoveUp () };
  field.appendChild (moveUpButton);

  var moveDownButton = this.createButton ();
  moveDownButton.innerHTML = 'Move down';
  moveDownButton.onclick = function () { field.wvMoveDown () };
  field.appendChild (moveDownButton);

  return field;
}; // createField

WidgetValues.prototype.clear = function () {
  var self = this;

  this._clear ();

  var fields = document.createElement ('div');
  this.container.appendChild (fields);
  this.fieldsParent = fields;

  var addButton = this.createButton ();
  addButton.innerHTML = 'Add';
  addButton.onclick = function () { self.appendValues (['']) };
  this.container.appendChild (addButton);

  var resetButton = this.createButton ();
  resetButton.innerHTML = 'Reset';
  resetButton.onclick = function () { self.reset () };
  this.container.appendChild (resetButton);
}; // clear

if (window.WidgetValuesOnLoad) WidgetValuesOnLoad ();

/*

Usage:

  <script src="http://suika.fam.cx/www/style/ui/widget-values.js.u8" charset=utf-8></script>
  <script>
    window.onload = function () {
      new WidgetValues (document.getElementById ('c'));
    };
  </script>
  
  <div id=c data-widget-name=test-value data-widget-separator="[\r\n]+">
  <textarea name=test-values>
  default
  values
  separated
  by
  newlines
  </textarea>
  </div>

The |WidgetValues| constructor takes an argument, which represents the
container element.  The container element MUST contain a |textarea|
element, which represents the default values.  The content of the
container element is replaced by indivisual input fields (called
"fields" in this script) and additional contents such as an "add"
button.

The |data-widget-name| attribute of the container element represents
the name of the control, used by the form controls in the fields as
the |name| attribute value.  This attribute is REQURIED.

The |data-widget-separator| attribute of the container element
represents a JavaScript regular expression that matches to substrings
used to separate values in the |textarea| element.  This attribute is
optional; the default separator is /\s+/ (i.e. spaces).

You can customize how fields and additional contents are organized in
the container element by creating a subclass and inheriting
|createField| and |clear| methods, like the example below:

  // <http://suika.fam.cx/~wakaba/-temp/test/misc/jswidgets/values/values-2.html>
  
  function MyNumbersWidget (c) {
    WidgetValues.apply (this, [c]);
  }
  
  MyNumbersWidget.prototype = new WidgetValues;
  
  MyNumbersWidget.prototype.createField = function (value) {
    var field = document.createElement ('span');
    field.wvIsField = true;
    
    var input = document.createElement ('input');
    input.setAttribute ('type', 'number');
    input.setAttribute ('min', 1);
    input.setAttribute ('max', 10);
    field.appendChild (input);
    
    return field;
  };
  
  MyNumbersWidget.prototype.clear = function () {
    var self = this;
    
    this._clear ();
    
    var fields = document.createElement ('span');
    this.container.appendChild (fields);
    this.fieldsParent = fields;
    
    var addButton = this.createButton ();
    addButton.innerHTML = '+';
    addButton.onclick = function () { self.appendValues ([5]) };
    this.container.appendChild (addButton);
  };

Latest version of this script is available at
<http://suika.fam.cx/www/style/ui/widget-values.js.u8>.  Old versions
of this script are available from
<http://suika.fam.cx/www/style/ui/widget-values.js.u8,cvslog>.

*/

/* ***** BEGIN LICENSE BLOCK *****
 * Copyright 2008 Wakaba <[email protected]>.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or 
 * modify it under the same terms as Perl itself.
 *
 * Alternatively, the contents of this file may be used 
 * under the following terms (the "MPL/GPL/LGPL"), 
 * in which case the provisions of the MPL/GPL/LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of the MPL/GPL/LGPL, and not to allow others to
 * use your version of this file under the terms of the Perl, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the MPL/GPL/LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the Perl or the MPL/GPL/LGPL.
 *
 * "MPL/GPL/LGPL":
 *
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * <http://www.mozilla.org/MPL/>
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is WidgetValues code.
 *
 * The Initial Developer of the Original Code is Wakaba.
 * Portions created by the Initial Developer are Copyright (C) 2008
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Wakaba <[email protected]>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the LGPL or the GPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */
1	wakaba	1.1	function WidgetValues (c) {
2			if (c) {
3			this.container = c;
4			this._init ();
5			}
6			} // WidgetValues
7
8			WidgetValues.prototype._init = function () {
9			var ta = this.container.getElementsByTagName ('textarea')[0];
10			if (!ta) return;
11
12			this.name = this.container.getAttribute ('data-widget-name') \|\| ta.name \|\| '';
13
14			this.separatorPattern
15			= new RegExp (this.container.getAttribute ('data-widget-separator')
16			\|\| '\\s+');
17
18	wakaba	1.2	this.defaultValues = ta.defaultValue.length
19			? ta.defaultValue.split (this.separatorPattern) : [];
20			this.initialValues = ta.value.length
21			? ta.value.split (this.separatorPattern) : [];
22	wakaba	1.1
23			this.clear ();
24			this.appendValues (this.initialValues);
25			}; // _init
26
27			WidgetValues.prototype._clear = function () {
28			this.firstField = null;
29			this.lastField = null;
30			this.container.innerHTML = '';
31			}; // _clear
32
33			WidgetValues.prototype.appendValues = function (values) {
34			var self = this;
35			for (var i = 0; i < values.length; i++) {
36			var field = this.createField (values[i]);
37			field.wvRemove = function () { self._removeField (this) };
38			field.wvMoveUp = function () { self._moveUpField (this) };
39			field.wvMoveDown = function () { self._moveDownField (this) };
40			var parent = this.lastField ? this.lastField.parentNode : null;
41			parent = parent ? parent : this.fieldsParent;
42			parent.insertBefore (field, this.lastField ? this.lastField.nextSibling : null);
43			this.lastField = field;
44			this.firstField = this.firstField \|\| field;
45			}
46			}; // appendValues
47
48			WidgetValues.prototype.reset = function () {
49			this.clear ();
50			this.appendValues (this.defaultValues);
51			}; // reset
52
53			WidgetValues.prototype._removeField = function (field) {
54			if (this.firstField == field) {
55			this.firstField = this._getNextField (field);
56			}
57			if (this.lastField == field) {
58			this.lastField = this._getPreviousField (field);
59			}
60			field.parentNode.removeChild (field);
61			}; // _removeField
62
63			WidgetValues.prototype._moveUpField = function (field) {
64			this._swapFields (field, this._getPreviousField (field));
65			}; // _moveUpField
66
67			WidgetValues.prototype._moveDownField = function (field) {
68			this._swapFields (field, this._getNextField (field));
69			}; // _moveDownField
70
71			WidgetValues.prototype._swapFields = function (f1, f2) {
72			if (!f1 \|\| !f2) return;
73			var ph = document.createElement (f1.tagName \|\| 'x');
74			f1.parentNode.replaceChild (ph, f1);
75			f2.parentNode.replaceChild (f1, f2);
76			ph.parentNode.replaceChild (f2, ph);
77			}; // _swapFields
78
79			WidgetValues.prototype._getNextField = function (field) {
80			var n = field.nextSibling;
81			while (n != null) {
82			if (this.isField (n)) {
83			return n;
84			}
85			n = n.nextSibling;
86			}
87			return null;
88			}; // _getNextField
89
90			WidgetValues.prototype._getPreviousField = function (field) {
91			var n = field.previousSibling;
92			while (n != null) {
93			if (this.isField (n)) {
94			return n;
95			}
96			n = n.previousSibling;
97			}
98			return null;
99			}; // _getPreviousField
100
101			WidgetValues.prototype.createButton = function () {
102			var el;
103
104			try {
105			el = document.createElement ('button');
106	wakaba	1.2	el.setAttribute('type', 'button');
107	wakaba	1.1	} catch (e) {
108			el = document.createElement ('<button type=button>');
109			}
110
111			return el;
112			}; // createButton
113
114			WidgetValues.prototype.isField = function (n) {
115			return n.wvIsField;
116			}; // isField
117
118
119
120
121			WidgetValues.prototype.createField = function (value) {
122			var field = document.createElement ('div');
123			field.wvIsField = true;
124
125			var input = document.createElement ('input');
126			input.name = this.name;
127			input.value = value;
128			field.appendChild (input);
129
130			var removeButton = this.createButton ();
131			removeButton.innerHTML = 'Remove';
132			removeButton.onclick = function () { field.wvRemove () };
133			field.appendChild (removeButton);
134
135			var moveUpButton = this.createButton ();
136			moveUpButton.innerHTML = 'Move up';
137			moveUpButton.onclick = function () { field.wvMoveUp () };
138			field.appendChild (moveUpButton);
139
140			var moveDownButton = this.createButton ();
141			moveDownButton.innerHTML = 'Move down';
142			moveDownButton.onclick = function () { field.wvMoveDown () };
143			field.appendChild (moveDownButton);
144
145			return field;
146			}; // createField
147
148			WidgetValues.prototype.clear = function () {
149			var self = this;
150
151			this._clear ();
152
153			var fields = document.createElement ('div');
154			this.container.appendChild (fields);
155			this.fieldsParent = fields;
156
157			var addButton = this.createButton ();
158			addButton.innerHTML = 'Add';
159			addButton.onclick = function () { self.appendValues (['']) };
160			this.container.appendChild (addButton);
161
162			var resetButton = this.createButton ();
163			resetButton.innerHTML = 'Reset';
164			resetButton.onclick = function () { self.reset () };
165			this.container.appendChild (resetButton);
166			}; // clear
167
168			if (window.WidgetValuesOnLoad) WidgetValuesOnLoad ();
169
170			/*
171
172			Usage:
173
174			<script src="http://suika.fam.cx/www/style/ui/widget-values.js.u8" charset=utf-8></script>
175			<script>
176			window.onload = function () {
177			new WidgetValues (document.getElementById ('c'));
178			};
179			</script>
180
181			<div id=c data-widget-name=test-value data-widget-separator="[\r\n]+">
182			<textarea name=test-values>
183			default
184			values
185			separated
186			by
187			newlines
188			</textarea>
189			</div>
190
191			The \|WidgetValues\| constructor takes an argument, which represents the
192			container element. The container element MUST contain a \|textarea\|
193			element, which represents the default values. The content of the
194			container element is replaced by indivisual input fields (called
195			"fields" in this script) and additional contents such as an "add"
196			button.
197
198			The \|data-widget-name\| attribute of the container element represents
199			the name of the control, used by the form controls in the fields as
200			the \|name\| attribute value. This attribute is REQURIED.
201
202			The \|data-widget-separator\| attribute of the container element
203			represents a JavaScript regular expression that matches to substrings
204			used to separate values in the \|textarea\| element. This attribute is
205			optional; the default separator is /\s+/ (i.e. spaces).
206
207			You can customize how fields and additional contents are organized in
208			the container element by creating a subclass and inheriting
209			\|createField\| and \|clear\| methods, like the example below:
210
211	wakaba	1.2	// <http://suika.fam.cx/~wakaba/-temp/test/misc/jswidgets/values/values-2.html>
212	wakaba	1.1
213			function MyNumbersWidget (c) {
214			WidgetValues.apply (this, [c]);
215			}
216
217			MyNumbersWidget.prototype = new WidgetValues;
218
219			MyNumbersWidget.prototype.createField = function (value) {
220			var field = document.createElement ('span');
221			field.wvIsField = true;
222
223			var input = document.createElement ('input');
224	wakaba	1.2	input.setAttribute ('type', 'number');
225	wakaba	1.1	input.setAttribute ('min', 1);
226			input.setAttribute ('max', 10);
227			field.appendChild (input);
228
229			return field;
230			};
231
232			MyNumbersWidget.prototype.clear = function () {
233			var self = this;
234
235			this._clear ();
236
237			var fields = document.createElement ('span');
238			this.container.appendChild (fields);
239			this.fieldsParent = fields;
240
241			var addButton = this.createButton ();
242			addButton.innerHTML = '+';
243			addButton.onclick = function () { self.appendValues ([5]) };
244			this.container.appendChild (addButton);
245			};
246
247			Latest version of this script is available at
248			<http://suika.fam.cx/www/style/ui/widget-values.js.u8>. Old versions
249			of this script are available from
250			<http://suika.fam.cx/www/style/ui/widget-values.js.u8,cvslog>.
251
252			*/
253
254			/* *** BEGIN LICENSE BLOCK ***
255	wakaba	1.3	* Copyright 2008 Wakaba <[email protected]>. All rights reserved.
256			*
257			* This program is free software; you can redistribute it and/or
258			* modify it under the same terms as Perl itself.
259			*
260			* Alternatively, the contents of this file may be used
261			* under the following terms (the "MPL/GPL/LGPL"),
262			* in which case the provisions of the MPL/GPL/LGPL are applicable instead
263			* of those above. If you wish to allow use of your version of this file only
264			* under the terms of the MPL/GPL/LGPL, and not to allow others to
265			* use your version of this file under the terms of the Perl, indicate your
266			* decision by deleting the provisions above and replace them with the notice
267			* and other provisions required by the MPL/GPL/LGPL. If you do not delete
268			* the provisions above, a recipient may use your version of this file under
269			* the terms of any one of the Perl or the MPL/GPL/LGPL.
270			*
271			* "MPL/GPL/LGPL":
272			*
273	wakaba	1.1	* Version: MPL 1.1/GPL 2.0/LGPL 2.1
274			*
275			* The contents of this file are subject to the Mozilla Public License Version
276			* 1.1 (the "License"); you may not use this file except in compliance with
277			* the License. You may obtain a copy of the License at
278			* <http://www.mozilla.org/MPL/>
279			*
280			* Software distributed under the License is distributed on an "AS IS" basis,
281			* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
282			* for the specific language governing rights and limitations under the
283			* License.
284			*
285			* The Original Code is WidgetValues code.
286			*
287	wakaba	1.3	* The Initial Developer of the Original Code is Wakaba.
288	wakaba	1.1	* Portions created by the Initial Developer are Copyright (C) 2008
289			* the Initial Developer. All Rights Reserved.
290			*
291			* Contributor(s):
292			* Wakaba <[email protected]>
293			*
294			* Alternatively, the contents of this file may be used under the terms of
295			* either the GNU General Public License Version 2 or later (the "GPL"), or
296			* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
297			* in which case the provisions of the GPL or the LGPL are applicable instead
298			* of those above. If you wish to allow use of your version of this file only
299			* under the terms of either the GPL or the LGPL, and not to allow others to
300			* use your version of this file under the terms of the MPL, indicate your
301			* decision by deleting the provisions above and replace them with the notice
302	wakaba	1.3	* and other provisions required by the LGPL or the GPL. If you do not delete
303	wakaba	1.1	* the provisions above, a recipient may use your version of this file under
304			* the terms of any one of the MPL, the GPL or the LGPL.
305			*
306			* *** END LICENSE BLOCK *** */