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
|
/**
* Save the state of a table
* @param {object} oSettings dataTables settings object
* @memberof DataTable#oApi
*/
function _fnSaveState ( settings )
{
if (settings._bLoadingState) {
return;
}
/* Store the interesting variables */
var state = {
time: +new Date(),
start: settings._iDisplayStart,
length: settings._iDisplayLength,
order: $.extend( true, [], settings.aaSorting ),
search: _fnSearchToCamel( settings.oPreviousSearch ),
columns: $.map( settings.aoColumns, function ( col, i ) {
return {
visible: col.bVisible,
search: _fnSearchToCamel( settings.aoPreSearchCols[i] )
};
} )
};
settings.oSavedState = state;
_fnCallbackFire( settings, "aoStateSaveParams", 'stateSaveParams', [settings, state] );
if ( settings.oFeatures.bStateSave && !settings.bDestroying )
{
settings.fnStateSaveCallback.call( settings.oInstance, settings, state );
}
}
/**
* Attempt to load a saved table state
* @param {object} oSettings dataTables settings object
* @param {object} oInit DataTables init object so we can override settings
* @param {function} callback Callback to execute when the state has been loaded
* @memberof DataTable#oApi
*/
function _fnLoadState ( settings, oInit, callback )
{
if ( ! settings.oFeatures.bStateSave ) {
callback();
return;
}
var loaded = function(state) {
_fnImplementState(settings, state, callback);
}
var state = settings.fnStateLoadCallback.call( settings.oInstance, settings, loaded );
if ( state !== undefined ) {
_fnImplementState( settings, state, callback );
}
// otherwise, wait for the loaded callback to be executed
return true;
}
function _fnImplementState ( settings, s, callback) {
var i, ien;
var columns = settings.aoColumns;
settings._bLoadingState = true;
// When StateRestore was introduced the state could now be implemented at any time
// Not just initialisation. To do this an api instance is required in some places
var api = settings._bInitComplete ? new DataTable.Api(settings) : null;
if ( ! s || ! s.time ) {
settings._bLoadingState = false;
callback();
return;
}
// Allow custom and plug-in manipulation functions to alter the saved data set and
// cancelling of loading by returning false
var abStateLoad = _fnCallbackFire( settings, 'aoStateLoadParams', 'stateLoadParams', [settings, s] );
if ( $.inArray( false, abStateLoad ) !== -1 ) {
settings._bLoadingState = false;
callback();
return;
}
// Reject old data
var duration = settings.iStateDuration;
if ( duration > 0 && s.time < +new Date() - (duration*1000) ) {
settings._bLoadingState = false;
callback();
return;
}
// Number of columns have changed - all bets are off, no restore of settings
if ( s.columns && columns.length !== s.columns.length ) {
settings._bLoadingState = false;
callback();
return;
}
// Store the saved state so it might be accessed at any time
settings.oLoadedState = $.extend( true, {}, s );
// Restore key features - todo - for 1.11 this needs to be done by
// subscribed events
if ( s.start !== undefined ) {
if(api === null) {
settings._iDisplayStart = s.start;
settings.iInitDisplayStart = s.start;
}
else {
_fnPageChange(settings, s.start/s.length);
}
}
if ( s.length !== undefined ) {
settings._iDisplayLength = s.length;
}
// Order
if ( s.order !== undefined ) {
settings.aaSorting = [];
$.each( s.order, function ( i, col ) {
settings.aaSorting.push( col[0] >= columns.length ?
[ 0, col[1] ] :
col
);
} );
}
// Search
if ( s.search !== undefined ) {
$.extend( settings.oPreviousSearch, _fnSearchToHung( s.search ) );
}
// Columns
if ( s.columns ) {
for ( i=0, ien=s.columns.length ; i<ien ; i++ ) {
var col = s.columns[i];
// Visibility
if ( col.visible !== undefined ) {
// If the api is defined, the table has been initialised so we need to use it rather than internal settings
if (api) {
// Don't redraw the columns on every iteration of this loop, we will do this at the end instead
api.column(i).visible(col.visible, false);
}
else {
columns[i].bVisible = col.visible;
}
}
// Search
if ( col.search !== undefined ) {
$.extend( settings.aoPreSearchCols[i], _fnSearchToHung( col.search ) );
}
}
// If the api is defined then we need to adjust the columns once the visibility has been changed
if (api) {
api.columns.adjust();
}
}
settings._bLoadingState = false;
_fnCallbackFire( settings, 'aoStateLoaded', 'stateLoaded', [settings, s] );
callback();
};
|
