Javascript 删除在网格extjs4中选择特定行的功能
我必须取消在网格中选择某些行的功能 我使用CheckboxModelJavascript 删除在网格extjs4中选择特定行的功能,javascript,extjs,Javascript,Extjs,我必须取消在网格中选择某些行的功能 我使用CheckboxModel selModel: Ext.create( 'Ext.selection.CheckboxModel', { mode: 'SIMPLE' } ) 要禁用选择,请使用beforeselect事件 beforeselect: function ( row, model, index ) { if ( model.data.id == '3' ) { return false; } }
selModel: Ext.create( 'Ext.selection.CheckboxModel', {
mode: 'SIMPLE'
} )
要禁用选择,请使用beforeselect事件
beforeselect: function ( row, model, index ) {
if ( model.data.id == '3' ) {
return false;
}
}
为了隐藏复选框,我对行和css规则使用了特定的类
viewConfig: {
getRowClass: function( record, index ) {
var id = record.get('id');
return id == '3' ? 'general-rule' : '';
}
}
.general-rule .x-grid-row-checker {
left: -9999px !important;
position: relative;
}
也许这不是达到预期结果的最佳方法,但对于我的任务来说,它是有效的
但是,出现了另一个问题:网格标题中的全选/取消全选复选框停止工作。第一次单击此复选框时,除不应选择的行外,所有行都将被选中,但如果再次单击,则不会发生任何事情。显然,系统会尝试重新选择所有行,因为有未选择的行
有没有更好的办法来解决这个问题?或者如何用这种方法解决问题
我想到的唯一一件事是,您需要重写Select All/Unselect All functions for复选框,但我不确定如何才能做到这一点
提前感谢您的回答,如果我提出的问题不符合规则,我深表歉意。目前没有内置挂钩来支持此类功能。标题复选框调用
selectAll
和deselectAll
,因此您需要覆盖这些方法,以防止在每个记录的基础上执行此操作。我的任务的最终解决方案(取消按id选择特定行的功能)如下所示:
当您定义选择模型以忽略指定行时,覆盖selectAll(和unselectAll(如果需要)方法:
selModel: Ext.create( 'Ext.selection.CheckboxModel', {
mode: 'SIMPLE',
select: function(records, keepExisting, suppressEvent) {
if (Ext.isDefined(records)) {
this.doSelect(records, keepExisting, suppressEvent);
}
},
selectAll: function( suppressEvent ) {
var me = this,
selections = me.store.getRange();
for( var key in selections ) {
if( selections[key].data.id == '3' ) {
selections.splice( key, 1 );
break;
}
}
var i = 0,
len = selections.length,
selLen = me.getSelection().length;
if( len != selLen ) {
me.bulkChange = true;
for (; i < len; i++) {
me.doSelect(selections[i], true, suppressEvent);
}
delete me.bulkChange;
me.maybeFireSelectionChange(me.getSelection().length !== selLen);
}
else {
me.deselectAll( suppressEvent );
}
}
} )
beforeselect: function ( row, model, index ) {
if ( model.data.id == '3' ) {
return false;
}
}
viewConfig: {
getRowClass: function( record, index ) {
var id = record.get('id');
return id == '3' ? 'general-rule' : '';
}
}
.general-rule .x-grid-row-checker {
left: -9999px !important;
position: relative;
}
为指定行使用特殊类,并使用相应的css规则隐藏指定行:
selModel: Ext.create( 'Ext.selection.CheckboxModel', {
mode: 'SIMPLE',
select: function(records, keepExisting, suppressEvent) {
if (Ext.isDefined(records)) {
this.doSelect(records, keepExisting, suppressEvent);
}
},
selectAll: function( suppressEvent ) {
var me = this,
selections = me.store.getRange();
for( var key in selections ) {
if( selections[key].data.id == '3' ) {
selections.splice( key, 1 );
break;
}
}
var i = 0,
len = selections.length,
selLen = me.getSelection().length;
if( len != selLen ) {
me.bulkChange = true;
for (; i < len; i++) {
me.doSelect(selections[i], true, suppressEvent);
}
delete me.bulkChange;
me.maybeFireSelectionChange(me.getSelection().length !== selLen);
}
else {
me.deselectAll( suppressEvent );
}
}
} )
beforeselect: function ( row, model, index ) {
if ( model.data.id == '3' ) {
return false;
}
}
viewConfig: {
getRowClass: function( record, index ) {
var id = record.get('id');
return id == '3' ? 'general-rule' : '';
}
}
.general-rule .x-grid-row-checker {
left: -9999px !important;
position: relative;
}
感谢Evan Trimboli的建议