我正在实现的功能并不是真正需要的，因此我不会为此包含额外的线程库。但是，如果有人知道解决方法，我将不胜感激。
所以我有一个 256 行和 3 列的网格；其中一列是checkboxColumn（类似于此处使用的列）。但是该 checkboxColumn 插件已被修改为在标题中显示一个复选框，以允许一种Check-All和Check-None功能。
因为有太多行，所以检查所有过程需要很长时间。所以我决定放一个“纺车”（等待 gif 动画）。现在的问题是动画不起作用。所以我defer调用了允许动画图标的渲染，但似乎这defer还不足以让动画运行。尽管这defer至少允许显示等待 gif 的第一帧，而不是显示检查状态大约一分钟，直到一切完成后显示未检查状态。
这是昂贵的方法：
internalSetAllColumn: function(column, newValue) {
column.masterValue = newValue;
column.header = '<div class="x-grid3-check-col-td loading-indicator"> </div>'; // loading icon
this.grid.getView().updateHeaders();
(function() {
this.grid.getStore().each(function(rec) {
if (this.isCellEditable(rec)) {
rec.set(this.dataIndex, newValue);
}
}, this);
column.renderHeaderCheck();
this.grid.getView().updateHeaders();
}).defer(50, this);
}
您可以在以下代码片段中看到一个工作示例：
/*global Ext */
Ext.grid.CheckColumn = function(config){
Ext.apply(this, config);
if(!this.id){
this.id = Ext.id();
}
this.headerText = this.headerText || this.header || ' ';
this.renderer = this.renderer.createDelegate(this);
};
Ext.grid.CheckColumn.prototype = {
init: function(grid) {
this.grid = grid;
var column = this.grid.getColumnModel().getColumnById(this.id);
column.masterValue = false;
if (this.headerCheck) {
column.renderHeaderCheck();
}
this.grid.on('headerclick', this.onHeaderClick, this);
this.grid.on('render', function() {
var view = this.grid.getView();
view.mainBody.on('mousedown', this.onMouseDown, this);
view.updateHeaders();
}, this);
}
, dataIndex: ''
, masterValue: false
, width: 90
, fixed: true
, headerCheck: false
, enableHeaderControl: true
, onMouseDown: function(e, t) {
if (!this.readonly) {
if (Ext.fly(t).hasClass('x-grid3-cc-' + this.id)) {
e.stopEvent();
var editEvent = {};
editEvent.row = this.grid.getView().findRowIndex(t);
editEvent.column = this.grid.getColumnModel().findColumnIndex(this.dataIndex);
editEvent.grid = this.grid;
editEvent.field = this.dataIndex;
editEvent.record = this.grid.store.getAt(editEvent.row);
editEvent.originalValue = editEvent.record.data[this.dataIndex];
editEvent.value = !editEvent.originalValue;
editEvent.record.set(editEvent.field, editEvent.value);
editEvent.grid.fireEvent('afteredit', editEvent);
}
}
},
getCheckedCls: function(v) {
return v === -1 ? 'x-grid3-check-col-gray' : (v ? 'x-grid3-check-col-on' : 'x-grid3-check-col');
},
renderHeaderCheck: function() {
this.header = '<div class="' + this.getCheckedCls(this.masterValue) + '">' + this.headerText + '</div>';
},
onHeaderClick: function(grid, columnIndex, event) {
var colModel = grid.getColumnModel();
var cIndex = colModel.getIndexById(this.id);
if (cIndex == columnIndex && this.enableHeaderControl !== false && this.headerCheck) {
var column = colModel.getColumnById(this.id);
var newValue = !column.masterValue;
this.internalSetAllColumn(column, newValue);
colModel.fireEvent("headerchange", colModel, columnIndex, column.header);
this.grid.getView().updateHeaders();
}
},
renderer: function(v, p, record, rowIndex, colIndex, store) {
p.css += ' x-grid3-check-col-td';
return '<div class="' + this.getCheckedCls(v) + ' x-grid3-cc-' + this.id + '"> </div>';
},
internalSetAllColumn: function(column, newValue) {
column.masterValue = newValue;
column.header = '<div class="x-grid3-check-col-td loading-indicator"> </div>'; // loading icon
this.grid.getView().updateHeaders();
(function() {
this.grid.getStore().each(function(rec) {
rec.set(this.dataIndex, newValue);
}, this);
column.renderHeaderCheck();
this.grid.getView().updateHeaders();
}).defer(50, this);
},
setAllColumn: function(columnIndex, newValue) {
var colModel = this.grid.getColumnModel();
var colId = colModel.getColumnId(columnIndex);
var column = colModel.getColumnById(colId);
this.internalSetAllColumn(column, newValue);
this.grid.getView().updateHeaders();
}
};
// -----------------------------------------
// End of plugin - Beginning of example code
// -----------------------------------------
var chkColCountry = new Ext.grid.CheckColumn({ dataIndex: 'State.After', width: 50, headerCheck: true });
var dsCountries = new Ext.data.ArrayStore({
fields: ['Id', 'Name']
, data: [["US","United States"],["CA","Canada"],["AF","Afghanistan"],["AL","Albania"],["DZ","Algeria"],["DS","American Samoa"],["AD","Andorra"],["AO","Angola"],["AI","Anguilla"],["AQ","Antarctica"],["AG","Antigua and/or Barbuda"],["AR","Argentina"],["AM","Armenia"],["AW","Aruba"],["AU","Australia"],["AT","Austria"],["AZ","Azerbaijan"],["BS","Bahamas"],["BH","Bahrain"],["BD","Bangladesh"],["BB","Barbados"],["BY","Belarus"],["BE","Belgium"],["BZ","Belize"],["BJ","Benin"],["BM","Bermuda"],["BT","Bhutan"],["BO","Bolivia"],["BA","Bosnia and Herzegovina"],["BW","Botswana"],["BV","Bouvet Island"],["BR","Brazil"],["IO","British lndian Ocean Territory"],["BN","Brunei Darussalam"],["BG","Bulgaria"],["BF","Burkina Faso"],["BI","Burundi"],["KH","Cambodia"],["CM","Cameroon"],["CV","Cape Verde"],["KY","Cayman Islands"],["CF","Central African Republic"],["TD","Chad"],["CL","Chile"],["CN","China"],["CX","Christmas Island"],["CC","Cocos (Keeling) Islands"],["CO","Colombia"],["KM","Comoros"],["CG","Congo"],["CK","Cook Islands"],["CR","Costa Rica"],["HR","Croatia (Hrvatska)"],["CU","Cuba"],["CY","Cyprus"],["CZ","Czech Republic"],["DK","Denmark"],["DJ","Djibouti"],["DM","Dominica"],["DO","Dominican Republic"],["TP","East Timor"],["EC","Ecudaor"],["EG","Egypt"],["SV","El Salvador"],["GQ","Equatorial Guinea"],["ER","Eritrea"],["EE","Estonia"],["ET","Ethiopia"],["FK","Falkland Islands (Malvinas)"],["FO","Faroe Islands"],["FJ","Fiji"],["FI","Finland"],["FR","France"],["FX","France, Metropolitan"],["GF","French Guiana"],["PF","French Polynesia"],["TF","French Southern Territories"],["GA","Gabon"],["GM","Gambia"],["GE","Georgia"],["DE","Germany"],["GH","Ghana"],["GI","Gibraltar"],["GR","Greece"],["GL","Greenland"],["GD","Grenada"],["GP","Guadeloupe"],["GU","Guam"],["GT","Guatemala"],["GN","Guinea"],["GW","Guinea-Bissau"],["GY","Guyana"],["HT","Haiti"],["HM","Heard and Mc Donald Islands"],["HN","Honduras"],["HK","Hong Kong"],["HU","Hungary"],["IS","Iceland"],["IN","India"],["ID","Indonesia"],["IR","Iran (Islamic Republic of)"],["IQ","Iraq"],["IE","Ireland"],["IL","Israel"],["IT","Italy"],["CI","Ivory Coast"],["JM","Jamaica"],["JP","Japan"],["JO","Jordan"],["KZ","Kazakhstan"],["KE","Kenya"],["KI","Kiribati"],["KP","Korea, Democratic People's Republic of"],["KR","Korea, Republic of"],["KW","Kuwait"],["KG","Kyrgyzstan"],["LA","Lao People's Democratic Republic"],["LV","Latvia"],["LB","Lebanon"],["LS","Lesotho"],["LR","Liberia"],["LY","Libyan Arab Jamahiriya"],["LI","Liechtenstein"],["LT","Lithuania"],["LU","Luxembourg"],["MO","Macau"],["MK","Macedonia"],["MG","Madagascar"],["MW","Malawi"],["MY","Malaysia"],["MV","Maldives"],["ML","Mali"],["MT","Malta"],["MH","Marshall Islands"],["MQ","Martinique"],["MR","Mauritania"],["MU","Mauritius"],["TY","Mayotte"],["MX","Mexico"],["FM","Micronesia, Federated States of"],["MD","Moldova, Republic of"],["MC","Monaco"],["MN","Mongolia"],["MS","Montserrat"],["MA","Morocco"],["MZ","Mozambique"],["MM","Myanmar"],["NA","Namibia"],["NR","Nauru"],["NP","Nepal"],["NL","Netherlands"],["AN","Netherlands Antilles"],["NC","New Caledonia"],["NZ","New Zealand"],["NI","Nicaragua"],["NE","Niger"],["NG","Nigeria"],["NU","Niue"],["NF","Norfork Island"],["MP","Northern Mariana Islands"],["NO","Norway"],["OM","Oman"],["PK","Pakistan"],["PW","Palau"],["PA","Panama"],["PG","Papua New Guinea"],["PY","Paraguay"],["PE","Peru"],["PH","Philippines"],["PN","Pitcairn"],["PL","Poland"],["PT","Portugal"],["PR","Puerto Rico"],["QA","Qatar"],["RE","Reunion"],["RO","Romania"],["RU","Russian Federation"],["RW","Rwanda"],["KN","Saint Kitts and Nevis"],["LC","Saint Lucia"],["VC","Saint Vincent and the Grenadines"],["WS","Samoa"],["SM","San Marino"],["ST","Sao Tome and Principe"],["SA","Saudi Arabia"],["SN","Senegal"],["SC","Seychelles"],["SL","Sierra Leone"],["SG","Singapore"],["SK","Slovakia"],["SI","Slovenia"],["SB","Solomon Islands"],["SO","Somalia"],["ZA","South Africa"],["GS","South Georgia South Sandwich Islands"],["ES","Spain"],["LK","Sri Lanka"],["SH","St. Helena"],["PM","St. Pierre and Miquelon"],["SD","Sudan"],["SR","Suriname"],["SJ","Svalbarn and Jan Mayen Islands"],["SZ","Swaziland"],["SE","Sweden"],["CH","Switzerland"],["SY","Syrian Arab Republic"],["TW","Taiwan"],["TJ","Tajikistan"],["TZ","Tanzania, United Republic of"],["TH","Thailand"],["TG","Togo"],["TK","Tokelau"],["TO","Tonga"],["TT","Trinidad and Tobago"],["TN","Tunisia"],["TR","Turkey"],["TM","Turkmenistan"],["TC","Turks and Caicos Islands"],["TV","Tuvalu"],["UG","Uganda"],["UA","Ukraine"],["AE","United Arab Emirates"],["GB","United Kingdom"],["UM","United States minor outlying islands"],["UY","Uruguay"],["UZ","Uzbekistan"],["VU","Vanuatu"],["VA","Vatican City State"],["VE","Venezuela"],["VN","Vietnam"],["VG","Virigan Islands (British)"],["VI","Virgin Islands (U.S.)"],["WF","Wallis and Futuna Islands"],["EH","Western Sahara"],["YE","Yemen"],["YU","Yugoslavia"],["ZR","Zaire"],["ZM","Zambia"],["ZW","Zimbabwe"]]
, autoLoad: false
});
var cmCountry = new Ext.grid.ColumnModel([
chkColCountry
, { id: 'Id', header: 'Id', dataIndex: 'Id', width: 40 }
, { id: 'Name', header: 'CountryName', dataIndex: 'Name', width: 460 }
, { id: 'After', header: 'After', dataIndex: 'State.After', hidden: true }
]);
var grdCountries = new Ext.grid.GridPanel({
store: dsCountries
, cm: cmCountry
, plugins: chkColCountry
, enableHdMenu: false
});
var win = new Ext.Window({
layout: 'fit'
, height: 190
, width: 600
, items: [grdCountries]
});
win.show();<link href="//cdnjs.cloudflare.com/ajax/libs/extjs/3.4.1-1/resources/css/ext-all.css" rel="stylesheet"/>
<script src="//cdnjs.cloudflare.com/ajax/libs/extjs/3.4.1-1/adapter/ext/ext-base.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/extjs/3.4.1-1/ext-all.js"></script>单击列复选框（标题上的复选框）并查看未按预期旋转的 gif 。
注意：我在其他地方有分页功能，但我不会在这里使用它，因为 256 行总是相同的。所以我宁愿丢失检查所有按钮而不是分页。