shubhadownloader
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JavaScript
/**
* A {@link Ext.form.FieldContainer field container} which has a specialized layout for arranging
* {@link Ext.form.field.Checkbox} controls into columns, and provides convenience
* {@link Ext.form.field.Field} methods for {@link #getValue getting}, {@link #setValue setting},
* and {@link #validate validating} the group of checkboxes as a whole.
*
* # Validation
*
* Individual checkbox fields themselves have no default validation behavior, but
* sometimes you want to require a user to select at least one of a group of checkboxes. CheckboxGroup
* allows this by setting the config `{@link #allowBlank}:false`; when the user does not check at
* least one of the checkboxes, the entire group will be highlighted as invalid and the
* {@link #blankText error message} will be displayed according to the {@link #msgTarget} config.
*
* # Layout
*
* The default layout for CheckboxGroup makes it easy to arrange the checkboxes into
* columns; see the {@link #columns} and {@link #vertical} config documentation for details. You may also
* use a completely different layout by setting the {@link #layout} to one of the other supported layout
* types; for instance you may wish to use a custom arrangement of hbox and vbox containers. In that case
* the checkbox components at any depth will still be managed by the CheckboxGroup's validation.
*
* @example
* Ext.create('Ext.form.Panel', {
* title: 'Checkbox Group',
* width: 300,
* height: 125,
* bodyPadding: 10,
* renderTo: Ext.getBody(),
* items:[{
* xtype: 'checkboxgroup',
* fieldLabel: 'Two Columns',
* // Arrange checkboxes into two columns, distributed vertically
* columns: 2,
* vertical: true,
* items: [
* { boxLabel: 'Item 1', name: 'rb', inputValue: '1' },
* { boxLabel: 'Item 2', name: 'rb', inputValue: '2', checked: true },
* { boxLabel: 'Item 3', name: 'rb', inputValue: '3' },
* { boxLabel: 'Item 4', name: 'rb', inputValue: '4' },
* { boxLabel: 'Item 5', name: 'rb', inputValue: '5' },
* { boxLabel: 'Item 6', name: 'rb', inputValue: '6' }
* ]
* }]
* });
*/
Ext.define('Ext.form.CheckboxGroup', {
extend:'Ext.form.FieldContainer',
mixins: {
field: 'Ext.form.field.Field'
},
alias: 'widget.checkboxgroup',
requires: ['Ext.layout.container.CheckboxGroup', 'Ext.form.field.Base'],
/**
* @cfg {String} name
* @private
*/
/**
* @cfg {Ext.form.field.Checkbox[]/Object[]} items
* An Array of {@link Ext.form.field.Checkbox Checkbox}es or Checkbox config objects to arrange in the group.
*/
/**
* @cfg {String/Number/Number[]} columns
* Specifies the number of columns to use when displaying grouped checkbox/radio controls using automatic layout.
* This config can take several types of values:
*
* - 'auto' - The controls will be rendered one per column on one row and the width of each column will be evenly
* distributed based on the width of the overall field container. This is the default.
* - Number - If you specific a number (e.g., 3) that number of columns will be created and the contained controls
* will be automatically distributed based on the value of {@link #vertical}.
* - Array - You can also specify an array of column widths, mixing integer (fixed width) and float (percentage
* width) values as needed (e.g., [100, .25, .75]). Any integer values will be rendered first, then any float
* values will be calculated as a percentage of the remaining space. Float values do not have to add up to 1
* (100%) although if you want the controls to take up the entire field container you should do so.
*/
columns : 'auto',
/**
* @cfg {Boolean} vertical
* True to distribute contained controls across columns, completely filling each column top to bottom before
* starting on the next column. The number of controls in each column will be automatically calculated to keep
* columns as even as possible. The default value is false, so that controls will be added to columns one at a time,
* completely filling each row left to right before starting on the next row.
*/
vertical : false,
/**
* @cfg {Boolean} allowBlank
* False to validate that at least one item in the group is checked. If no items are selected at
* validation time, {@link #blankText} will be used as the error text.
*/
allowBlank : true,
//<locale>
/**
* @cfg {String} blankText
* Error text to display if the {@link #allowBlank} validation fails
*/
blankText : "You must select at least one item in this group",
//</locale>
// private
defaultType : 'checkboxfield',
// private
groupCls : Ext.baseCSSPrefix + 'form-check-group',
/**
* @cfg {String} [fieldBodyCls='x-form-checkboxgroup-body']
* An extra CSS class to be applied to the body content element in addition to {@link #baseBodyCls}.
*/
fieldBodyCls: Ext.baseCSSPrefix + 'form-checkboxgroup-body',
// private
layout: 'checkboxgroup',
initComponent: function() {
var me = this;
me.callParent();
me.initField();
},
/**
* Initializes the field's value based on the initial config. If the {@link #value} config is specified then we use
* that to set the value; otherwise we initialize the originalValue by querying the values of all sub-checkboxes
* after they have been initialized.
* @protected
*/
initValue: function() {
var me = this,
valueCfg = me.value;
me.originalValue = me.lastValue = valueCfg || me.getValue();
if (valueCfg) {
me.setValue(valueCfg);
}
},
/**
* When a checkbox is added to the group, monitor it for changes
* @param {Object} field
* @protected
*/
onFieldAdded: function(field) {
var me = this;
if (field.isCheckbox) {
me.mon(field, 'change', me.checkChange, me);
}
me.callParent(arguments);
},
onFieldRemoved: function(field) {
var me = this;
if (field.isCheckbox) {
me.mun(field, 'change', me.checkChange, me);
}
me.callParent(arguments);
},
// private override - the group value is a complex object, compare using object serialization
isEqual: function(value1, value2) {
var toQueryString = Ext.Object.toQueryString;
return toQueryString(value1) === toQueryString(value2);
},
/**
* Runs CheckboxGroup's validations and returns an array of any errors. The only error by default is if allowBlank
* is set to true and no items are checked.
* @return {String[]} Array of all validation errors
*/
getErrors: function() {
var errors = [];
if (!this.allowBlank && Ext.isEmpty(this.getChecked())) {
errors.push(this.blankText);
}
return errors;
},
/**
* @private Returns all checkbox components within the container
* @param {String} [query] An additional query to add to the selector.
*/
getBoxes: function(query) {
return this.query('[isCheckbox]' + (query||''));
},
/**
* @private Convenience function which calls the given function for every checkbox in the group
* @param {Function} fn The function to call
* @param {Object} [scope] scope object
*/
eachBox: function(fn, scope) {
Ext.Array.forEach(this.getBoxes(), fn, scope || this);
},
/**
* Returns an Array of all checkboxes in the container which are currently checked
* @return {Ext.form.field.Checkbox[]} Array of Ext.form.field.Checkbox components
*/
getChecked: function() {
return this.getBoxes('[checked]');
},
// private override
isDirty: function(){
var boxes = this.getBoxes(),
b ,
bLen = boxes.length;
for (b = 0; b < bLen; b++) {
if (boxes[b].isDirty()) {
return true;
}
}
},
// private override
setReadOnly: function(readOnly) {
var boxes = this.getBoxes(),
b,
bLen = boxes.length;
for (b = 0; b < bLen; b++) {
boxes[b].setReadOnly(readOnly);
}
this.readOnly = readOnly;
},
/**
* Resets the checked state of all {@link Ext.form.field.Checkbox checkboxes} in the group to their originally
* loaded values and clears any validation messages.
* See {@link Ext.form.Basic}.{@link Ext.form.Basic#trackResetOnLoad trackResetOnLoad}
*/
reset: function() {
var me = this,
hadError = me.hasActiveError(),
preventMark = me.preventMark;
me.preventMark = true;
me.batchChanges(function() {
var boxes = me.getBoxes(),
b,
bLen = boxes.length;
for (b = 0; b < bLen; b++) {
boxes[b].reset();
}
});
me.preventMark = preventMark;
me.unsetActiveError();
if (hadError) {
me.updateLayout();
}
},
resetOriginalValue: function(){
var me = this,
boxes = me.getBoxes(),
b,
bLen = boxes.length;
for (b = 0; b < bLen; b++) {
boxes[b].resetOriginalValue();
}
me.originalValue = me.getValue();
me.checkDirty();
},
/**
* Sets the value(s) of all checkboxes in the group. The expected format is an Object of name-value pairs
* corresponding to the names of the checkboxes in the group. Each pair can have either a single or multiple values:
*
* - A single Boolean or String value will be passed to the `setValue` method of the checkbox with that name.
* See the rules in {@link Ext.form.field.Checkbox#setValue} for accepted values.
* - An Array of String values will be matched against the {@link Ext.form.field.Checkbox#inputValue inputValue}
* of checkboxes in the group with that name; those checkboxes whose inputValue exists in the array will be
* checked and others will be unchecked.
*
* If a checkbox's name is not in the mapping at all, it will be unchecked.
*
* An example:
*
* var myCheckboxGroup = new Ext.form.CheckboxGroup({
* columns: 3,
* items: [{
* name: 'cb1',
* boxLabel: 'Single 1'
* }, {
* name: 'cb2',
* boxLabel: 'Single 2'
* }, {
* name: 'cb3',
* boxLabel: 'Single 3'
* }, {
* name: 'cbGroup',
* boxLabel: 'Grouped 1'
* inputValue: 'value1'
* }, {
* name: 'cbGroup',
* boxLabel: 'Grouped 2'
* inputValue: 'value2'
* }, {
* name: 'cbGroup',
* boxLabel: 'Grouped 3'
* inputValue: 'value3'
* }]
* });
*
* myCheckboxGroup.setValue({
* cb1: true,
* cb3: false,
* cbGroup: ['value1', 'value3']
* });
*
* The above code will cause the checkbox named 'cb1' to be checked, as well as the first and third checkboxes named
* 'cbGroup'. The other three checkboxes will be unchecked.
*
* @param {Object} value The mapping of checkbox names to values.
* @return {Ext.form.CheckboxGroup} this
*/
setValue: function(value) {
var me = this,
boxes = me.getBoxes(),
b,
bLen = boxes.length,
box, name,
cbValue;
me.batchChanges(function() {
for (b = 0; b < bLen; b++) {
box = boxes[b];
name = box.getName();
cbValue = false;
if (value && value.hasOwnProperty(name)) {
if (Ext.isArray(value[name])) {
cbValue = Ext.Array.contains(value[name], box.inputValue);
} else {
// single value, let the checkbox's own setValue handle conversion
cbValue = value[name];
}
}
box.setValue(cbValue);
}
});
return me;
},
/**
* Returns an object containing the values of all checked checkboxes within the group. Each key-value pair in the
* object corresponds to a checkbox {@link Ext.form.field.Checkbox#name name}. If there is only one checked checkbox
* with a particular name, the value of that pair will be the String {@link Ext.form.field.Checkbox#inputValue
* inputValue} of that checkbox. If there are multiple checked checkboxes with that name, the value of that pair
* will be an Array of the selected inputValues.
*
* The object format returned from this method can also be passed directly to the {@link #setValue} method.
*
* NOTE: In Ext 3, this method returned an array of Checkbox components; this was changed to make it more consistent
* with other field components and with the {@link #setValue} argument signature. If you need the old behavior in
* Ext 4+, use the {@link #getChecked} method instead.
*/
getValue: function() {
var values = {},
boxes = this.getBoxes(),
b,
bLen = boxes.length,
box, name, inputValue, bucket;
for (b = 0; b < bLen; b++) {
box = boxes[b];
name = box.getName();
inputValue = box.inputValue;
if (box.getValue()) {
if (values.hasOwnProperty(name)) {
bucket = values[name];
if (!Ext.isArray(bucket)) {
bucket = values[name] = [bucket];
}
bucket.push(inputValue);
} else {
values[name] = inputValue;
}
}
}
return values;
},
/*
* Don't return any data for submit; the form will get the info from the individual checkboxes themselves.
*/
getSubmitData: function() {
return null;
},
/*
* Don't return any data for the model; the form will get the info from the individual checkboxes themselves.
*/
getModelData: function() {
return null;
},
validate: function() {
var me = this,
errors,
isValid,
wasValid;
if (me.disabled) {
isValid = true;
} else {
errors = me.getErrors();
isValid = Ext.isEmpty(errors);
wasValid = !me.hasActiveError();
if (isValid) {
me.unsetActiveError();
} else {
me.setActiveError(errors);
}
}
if (isValid !== wasValid) {
me.fireEvent('validitychange', me, isValid);
me.updateLayout();
}
return isValid;
}
}, function() {
this.borrow(Ext.form.field.Base, ['markInvalid', 'clearInvalid']);
});