[英]How do I add gridstack.js to Ractive.js?
我正在使用Ractive.js和gridstack.js創建示例應用程序,但無法弄清楚如何將gridstack添加為裝飾器。 我認為這是向ractive.js添加jQuery元素的正確方法,請告知是否不是。
在我創建裝飾器並將其分配給Dashboard
組件后,它實際上不起作用,並且來自gridstackDecorator
事件不會緩存在Dashboard
組件中。
我用不起作用的代碼創建了這個小提琴 ,源代碼如下:
Ractive.js組件樹將如下所示:
- App
|--- Dashboard <-- GridstackDecorator
|--- Widget
|--- Widget container components
|--- ...
|--- Widget
|--- Other components
HTML模板看起來像:
<div id="app"></div>
<script>
window.__APP_INITIAL_STATE__ = {
widgets: [
{id: 1, name: "First widget", x:0, y:0, width:2, height:2},
{id: 2, name: "Second widget", x:5, y:0, width:2, height:2},
{id: 3, name: "Third widget", x:10, y:0, width:2, height:2},
],
};
</script>
我嘗試分配給Dashboard組件的gridstack裝飾器如下所示:
永遠不會調用update
和teardown
方法,為什么會這樣?
var gridstackDecorator = function gridstackDecorator( node, content ) {
console.log('new decorator', node, content);
var $gridstack;
var $gridstackEl;
var options = {
cellHeight: 80,
verticalMargin: 10,
height:20,
};
$gridstackEl = $(node);
$gridstackEl.gridstack(options);
$gridstack = $gridstackEl.data('gridstack');
$gridstackEl.on('change', function () {
console.log("change");
serialize();
});
function serialize() {
var result = _.map($('.grid-stack .grid-stack-item:visible'), function (el) {
el = $(el);
var node = el.data('_gridstack_node');
return {
id: el.attr('data-custom-id'),
x: node.x,
y: node.y,
width: node.width,
height: node.height
};
});
return result;
}
return {
update(x,y,z) {
// NEVER EXECUTES
console.log("update",x,y,z);
},
teardown(x,y,z) {
// NEVER EXECUTES
console.log("teardown",x,y,z);
$gridstack.destroy();
}
};
};
gridstack
小部件組件將呈現每個gridstack
容器元素:
var Widget = Ractive.extend({
isolated: true,
template: `<div class="grid-stack-item" data-gs-x="{{x}}" data-gs-y="{{y}}" data-gs-width="{{width}}" data-gs-height="{{height}}">
<div class="grid-stack-item-content">
{{id}}-{{name}} (x: {{x}}, y: {{y}})<a href="#" on-click="@this.fire('deleteWidget', event, id)">Xxx</a>
</div>
</div>`,
oninit() {
},
onrender() {
console.log("render");
},
data: {
x:10,
y:10,
width:100,
height:100,
}
})
Dashboard組件,其中gridstack
裝飾器被分配給:
var Dashboard = Ractive.extend({
isolated: true,
components: {
Widget
},
decorators: {
gridstack: gridstackDecorator
},
oninit() {
},
deleteWidget(id) {
console.log("deleteWidget", id);
},
addWidget(name) {
var widgets = this.get("widgets");
var id = widgets.length + 1;
widgets.push({
id: id,
name: name,
x:1,
y:1,
width:2,
htight:2
});
this.set("widgets", widgets);
},
updateWidgets(data) {
console.log("update widgets");
},
template: `
<div class="grid-stack" as-gridstack>
<a on-click="addWidget('New widget')" href="#">Add New</a>
{{#each widgets}}
<Widget
id="{{this.id}}"
name="{{this.name}}"
x="{{this.x}}"
y="{{this.y}}"
width="{{width}}"
height="{{height}}"
on-deleteWidget="@this.deleteWidget(id)"
>
</Widget>
{{/each}}
</div>`
});
使用Dashboard組件呈現整個應用程序的根組件如下所示:
var App = new Ractive({
el: '#app',
template: `<Dashboard widgets={{widgets}}></Dashboard>`,
components: {
Dashboard
},
data: window.__APP_INITIAL_STATE__
});
您必須通過在元素中添加“as - $ {decoratorName}”來指示Ractive關於您希望裝飾器被調用的元素,例如,在您的情況下
<div as-gridstack [other attributes...]> ... </div>
您還可以使用命令分隔列表將參數傳遞給裝飾器的更新功能
<div as-gridstack="arg1, arg2, ..., argN" [other attributes...]> ... </div>
您可以在https://ractive.js.org/v0.x/0.8/decorators和https://ractive.js.org/v0.x/0.8/writing-decorator-plugins上找到更多信息。
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