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add btf-dragon-base and btf-dragon-container #15

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add btf-dragon-base and btf-dragon-container #15

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18 changes: 18 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -78,6 +78,24 @@ $scope.shinyThings = function (item) {
};
```

### btf-dragon-base / btf-dragon-container
Makes it so the drop zone and template container can be separated.
Add `btf-dragon-base` to the dragon and `btf-dragon-container` to any child of the dragon.

Example:
```html
<div btf-dragon="item in list">
{{item.name}}
</div>
<h2>Here they are separate so you can drop anywhere under the base</h2>
<div btf-dragon="item in otherList" btf-dragon-base>
<h1>Drop On Me</h1>
<div btf-dragon-container>
{{item.name}}
</div>
</div>
```

## Example
See [`example.html`](http://htmlpreview.github.io/?https://github.com/btford/angular-dragon-drop/blob/master/example.html).

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24 changes: 22 additions & 2 deletions dragon-drop.js
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,18 @@ angular.module('btford.dragon-drop', []).
}
};

var findContainer = function(elem){
var children = elem.find('*');

for (var i = 0; i < children.length; i++){
if (children[i].hasAttribute('btf-dragon-container')) {
return angular.element(children[i]);
}
}

return null;
};

var documentBody = angular.element($document[0].body);

var disableSelect = function () {
Expand Down Expand Up @@ -184,8 +196,18 @@ angular.module('btford.dragon-drop', []).
var valueIdentifier = match[3] || match[1];
var keyIdentifier = match[2];

var duplicate = container.attr('btf-double-dragon') !== undefined;

// pull out the template to re-use.
// Improvised ng-transclude.
if (container.attr('btf-dragon-base') !== undefined){
container = findContainer(container);

if (!container){
throw new Error('Expected btf-dragon-base to be used with a companion btf-dragon-conatiner');
}
}

var template = container.html();

// wrap text nodes
Expand All @@ -204,8 +226,6 @@ angular.module('btford.dragon-drop', []).
container.html('');
container.append(child);

var duplicate = container.attr('btf-double-dragon') !== undefined;

return function (scope, elt, attr) {

var accepts = scope.$eval(attr.btfDragonAccepts);
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