不久之前,我问过“Angular.js rendering SVG templates in directives”,我用SVG节点替换渲染模板时角度所产生的DOM节点。我得到了一个响应它,但我意识到我丢失了所有的数据绑定。
请参阅Plunkr(点击更新):http://plnkr.co/edit/HjOpqc?p=preview
如何用SVG节点替换这些DOM节点,并保持角度绑定完整?我尝试使用$ compile使它工作(因为我已经完成了常规的html),但它只是不起作用。
代码:
var svgNS = 'http://www.w3.org/2000/svg';
app.directive('path', ngSvg('path'));
app.directive('g', ngSvg('g'));
function ngSvg(type) {
return function($timeout, $compile) {
return {
restrict: 'E',
link: function(scope, el, attr) {
//skip nodes if they are already svg
if (el[0].namespaceURI === svgNS) {
return;
}
// I would expect the chunk of code below to work,
// but it does not with ng-repeat
// var newAttr = {};
// _.each(el[0].attributes, function(at) {
// newAttr[at.nodeName] = at.value;
// });
// var path = makeNode(type, el, newAttr);
// var parent = path.cloneNode(true);
// $compile(parent)(scope);
// var children = el.children();
// $(parent).append(children);
// $timeout(function() {
// el.replaceWith(parent);
// })
// this works for rendering, but does not update the svg elements
// when update is clicked
$timeout(function() {
var newAttr = {};
_.each(el[0].attributes, function(at) {
newAttr[at.nodeName] = at.value;
});
var path = makeNode(type, el, newAttr);
var parent = path.cloneNode(true);
var children = el.children();
$(parent).append(children);
el.replaceWith(parent);
});
}
}
}
}
/* Create a shape node with the given settings. */
function makeNode(name, element, settings) {
// var ns = 'http://www.w3.org/2000/svg';
var node = document.createElementNS(svgNS, name);
for (var attribute in settings) {
var value = settings[attribute];
if (value !== null && value !== null && !attribute.match(/\$/) &&
(typeof value !== 'string' || value !== '')) {
node.setAttribute(attribute, value);
}
}
return node;
}
答案 0 :(得分:0)
此问题在Angular 1.3中得到解决,这里是一些自定义svg指令的实现,其中包含您期望从Angular指令获得的行为。现在对指令声明有一个特殊要求,如下templateNamespace: 'svg'
另请注意,我正在覆盖某些保留属性,例如,x
和height
与<rect/>
相关。要保留对这些内容的更多控制权,您可以使用ng-attr
'<rect ng-attr-width="{{ ngWidth }}" />
以下是自定义<rect/>
和<circle/>
app.directive('ngRect', [function () {
return {
templateNamespace: 'svg',
replace: true,
template: '<rect ng-attr-width="{{ ngWidth }}" ng-attr-height="{{ ngHeight }}" ng-attr-x="{{ ngX }}" ng-attr-y="{{ ngY }}" ng-click="ngRectClick()"/>',
scope: {
'ngHeight': '=',
'ngWidth': '='
},
link: function (scope, elem, attrs) {
scope.ngRectClick = function() {
console.log(elem);
}
}
}
}]);
app.directive('ngCircle', [function () {
return {
templateNamespace: 'svg',
replace: true,
template: '<circle ng-attr-cx="{{ ngCx }}" ng-attr-cy="{{ ngCy }}" ng-attr-r="{{ ngR }}" ng-attr-fill="{{ ngFill }}" ng-click="ngCircleClick()"/>',
scope: {
'ngCx': '=',
'ngCy': '=',
'ngR': '=',
'ngFill': '='
},
link: function (scope, elem, attrs) {
scope.ngCircleClick = function() {
console.log(elem);
}
}
}
}]);