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function parseBindings(string) {
var results = [];
var lastIndex = 0;
var index;
while((index = string.indexOf('{{', lastIndex)) > -1) {
if (lastIndex < index)
results.push(string.substr(lastIndex, index - lastIndex));
lastIndex = index;
index = string.indexOf('}}', index);
index = index < 0 ? string.length : index + 2;
results.push(string.substr(lastIndex, index - lastIndex));
lastIndex = index;
}
if (lastIndex != string.length)
results.push(string.substr(lastIndex, string.length - lastIndex));
return results.length === 0 ? [ string ] : results;
}
function binding(string) {
var binding = string.replace(/\n/gm, ' ').match(/^\{\{(.*)\}\}$/);
return binding ? binding[1] : null;
}
function hasBindings(bindings) {
return bindings.length > 1 || binding(bindings[0]) !== null;
}
angularTextMarkup('{{}}', function(text, textNode, parentElement) {
var bindings = parseBindings(text),
self = this;
if (hasBindings(bindings)) {
if (isLeafNode(parentElement[0])) {
parentElement.attr('ng:bind-template', text);
} else {
var cursor = textNode, newElement;
forEach(parseBindings(text), function(text){
var exp = binding(text);
if (exp) {
newElement = jqLite('<span>');
newElement.attr('ng:bind', exp);
} else {
newElement = jqLite(document.createTextNode(text));
}
if (msie && text.charAt(0) == ' ') {
newElement = jqLite('<span> </span>');
var nbsp = newElement.html();
newElement.text(text.substr(1));
newElement.html(nbsp + newElement.html());
}
cursor.after(newElement);
cursor = newElement;
});
textNode.remove();
}
}
});
/**
* This tries to normalize the behavior of value attribute across browsers. If value attribute is
* not specified, then specify it to be that of the text.
*/
angularTextMarkup('option', function(text, textNode, parentElement){
if (lowercase(nodeName_(parentElement)) == 'option') {
if (msie <= 7) {
// In IE7 The issue is that there is no way to see if the value was specified hence
// we have to resort to parsing HTML;
htmlParser(parentElement[0].outerHTML, {
start: function(tag, attrs) {
if (isUndefined(attrs.value)) {
parentElement.attr('value', text);
}
}
});
} else if (parentElement[0].getAttribute('value') == null) {
// jQuery does normalization on 'value' so we have to bypass it.
parentElement.attr('value', text);
}
}
});
/**
* @workInProgress
* @ngdoc directive
* @name angular.directive.ng:href
*
* @description
* Using <angular/> markup like {{hash}} in an href attribute makes
* the page open to a wrong URL, ff the user clicks that link before
* angular has a chance to replace the {{hash}} with actual URL, the
* link will be broken and will most likely return a 404 error.
* The `ng:href` solves this problem by placing the `href` in the
* `ng:` namespace.
*
* The buggy way to write it:
* <pre>
* <a href="http://www.gravatar.com/avatar/{{hash}}"/>
* </pre>
*
* The correct way to write it:
* <pre>
* <a ng:href="http://www.gravatar.com/avatar/{{hash}}"/>
* </pre>
*
* @element ANY
* @param {template} template any string which can contain `{{}}` markup.
*/
/**
* @workInProgress
* @ngdoc directive
* @name angular.directive.ng:src
*
* @description
* Using <angular/> markup like `{{hash}}` in a `src` attribute doesn't
* work right: The browser will fetch from the URL with the literal
* text `{{hash}}` until <angular/> replaces the expression inside
* `{{hash}}`. The `ng:src` attribute solves this problem by placing
* the `src` attribute in the `ng:` namespace.
*
* The buggy way to write it:
* <pre>
* <img src="http://www.gravatar.com/avatar/{{hash}}"/>
* </pre>
*
* The correct way to write it:
* <pre>
* <img ng:src="http://www.gravatar.com/avatar/{{hash}}"/>
* </pre>
*
* @element ANY
* @param {template} template any string which can contain `{{}}` markup.
*/
var NG_BIND_ATTR = 'ng:bind-attr';
var SPECIAL_ATTRS = {'ng:src': 'src', 'ng:href': 'href'};
angularAttrMarkup('{{}}', function(value, name, element){
// don't process existing attribute markup
if (angularDirective(name) || angularDirective("@" + name)) return;
if (msie && name == 'src')
value = decodeURI(value);
var bindings = parseBindings(value),
bindAttr;
if (hasBindings(bindings)) {
element.removeAttr(name);
bindAttr = fromJson(element.attr(NG_BIND_ATTR) || "{}");
bindAttr[SPECIAL_ATTRS[name] || name] = value;
element.attr(NG_BIND_ATTR, toJson(bindAttr));
}
});
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