aboutsummaryrefslogtreecommitdiffstats
path: root/js/util.js
blob: 98bafb664b958e3585f5b49fde14243b319485ed (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
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1
 *
 * 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 the Cross Platform JavaScript Utility Library.
 *
 * The Initial Developer of the Original Code is
 * Everything Solved.
 * Portions created by the Initial Developer are Copyright (C) 2007
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Max Kanat-Alexander <mkanat@bugzilla.org>
 *   Christopher A. Aillon <christopher@aillon.com>
 *
 * ***** END LICENSE BLOCK ***** */

/**
 * Locate where an element is on the page, x-wise.
 *
 * @param  obj Element of which location to return.
 * @return     Current position of the element relative to the left of the
 *             page window. Measured in pixels.
 */
function bz_findPosX(obj)
{
    var curleft = 0;

    if (obj.offsetParent) {
        while (obj) {
            curleft += obj.offsetLeft;
            obj = obj.offsetParent;
        }
    }
    else if (obj.x) {
        curleft += obj.x;
    }

    return curleft;
}

/**
 * Locate where an element is on the page, y-wise.
 *
 * @param  obj Element of which location to return.
 * @return     Current position of the element relative to the top of the
 *             page window. Measured in pixels.
 */
function bz_findPosY(obj)
{
    var curtop = 0;

    if (obj.offsetParent) {
        while (obj) {
            curtop += obj.offsetTop;
            obj = obj.offsetParent;
        }
    }
    else if (obj.y) {
        curtop += obj.y;
    }

    return curtop;
}

/**
 * Get the full height of an element, even if it's larger than the browser
 * window.
 *
 * @param  fromObj Element of which height to return.
 * @return         Current height of the element. Measured in pixels.
 */
function bz_getFullHeight(fromObj)
{
    var scrollY;

    // All but Mac IE
    if (fromObj.scrollHeight > fromObj.offsetHeight) {
        scrollY = fromObj.scrollHeight;
    // Mac IE
    }  else {
        scrollY = fromObj.offsetHeight;
    }

    return scrollY;
}

/**
 * Get the full width of an element, even if it's larger than the browser
 * window.
 *
 * @param  fromObj Element of which width to return.
 * @return         Current width of the element. Measured in pixels.
 */
function bz_getFullWidth(fromObj)
{
    var scrollX;

    // All but Mac IE
    if (fromObj.scrollWidth > fromObj.offsetWidth) {
        scrollX = fromObj.scrollWidth;
    // Mac IE
    }  else {
        scrollX = fromObj.offsetWidth;
    }

    return scrollX;
}

/**
 * Causes a block to appear directly underneath another block,
 * overlaying anything below it.
 * 
 * @param item   The block that you want to move.
 * @param parent The block that it goes on top of.
 * @return nothing
 */
function bz_overlayBelow(item, parent) {
    var elemY = bz_findPosY(parent);
    var elemX = bz_findPosX(parent);
    var elemH = parent.offsetHeight;

    item.style.position = 'absolute';
    item.style.left = elemX + "px";
    item.style.top = elemY + elemH + 1 + "px";
}

/**
 * Create wanted options in a select form control.
 *
 * @param  aSelect        Select form control to manipulate.
 * @param  aValue         Value attribute of the new option element.
 * @param  aTextValue     Value of a text node appended to the new option
 *                        element.
 * @param  aOwnerDocument Owner document of the new option element. If not
 *                        specified then "document" will be used.
 * @return                Created option element.
 */
function bz_createOptionInSelect(aSelect, aValue, aTextValue, aOwnerDocument)
{
  if (!aOwnerDocument) {
    aOwnerDocument = document;
  }

  var myOption = aOwnerDocument.createElement("option");
  myOption.setAttribute("value", aValue);

  var myTextNode = aOwnerDocument.createTextNode(aTextValue)
  myOption.appendChild(myTextNode);

  aSelect.appendChild(myOption);

  return myOption;
}

/**
 * Clears all options from a select form control.
 *
 * @param  aElm       Select form control of which options to clear.
 * @param  aSkipFirst Boolean; true to skip (not clear) first option in the
 *                    select and false to remove all options.
 */
function bz_clearOptions(aElm, aSkipFirst)
{
  var start = 0;

  // Skip the first element? (for 'Choose One' type foo)
  if (aSkipFirst) {
    start = 1;
  }

  var length = aElm.options.length;

  for (var run = start; run < length; run++) {
    aElm.removeChild(aElm.options[start]);
  }
}

/**
 * Takes an array and moves all the values to an select.
 *
 * @param aSelect         Select form control to populate. Will be cleared
 *                        before array values are created in it.
 * @param aArray          Array with values to populate select with.
 * @param aSkipFirst      Boolean; true to skip (not touch) first option in the
 *                        select and false to remove all options.
 * @param aUseNameAsValue Boolean; true if name is used as value and false if
 *                        not.
 */
function bz_populateSelectFromArray(aSelect, aArray, aSkipFirst, aUseNameAsValue)
{
  // Clear the field
  bz_clearOptions(aSelect, aSkipFirst);

  for (var run = 0; run < aArray.length; run++) {
    if (aUseNameAsValue) {
      bz_createOptionInSelect(aSelect, aArray[run], aArray[run]);
    } else {
      bz_createOptionInSelect(aSelect, aArray[run][0], aArray[run][0]);
    }
  }
}

/**
 * Checks if a specified value is in the specified array.
 *
 * @param  aArray Array to search for the value.
 * @param  aValue Value to search from the array.
 * @return        Boolean; true if value is found in the array and false if not.
 */
function bz_isValueInArray(aArray, aValue)
{
  var run = 0;
  var len = aArray.length;

  for ( ; run < len; run++) {
    if (aArray[run] == aValue) {
      return true;
    }
  }

  return false;
}