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/*
The selector locates elements that are suitable for annotation and enables
the user to select them.
On 'mouseenter' events associated with <p> elements:
- if the selector is active and the element is not already annotated
- find the nearest ancestor which has an id attribute: this is supposed to
make identification of this element more accurate
- highlight the element
- bind 'click' for the element to send a message back to the add-on, including
all the information associated with the anchor.
*/
var matchedElement = null;
var originalBgColor = null;
var active = false;
function resetMatchedElement() {
if (matchedElement) {
$(matchedElement).css('background-color', originalBgColor);
$(matchedElement).unbind('click.annotator');
}
}
self.on('message', function onMessage(activation) {
active = activation;
if (!active) {
resetMatchedElement();
}
});
$('*').mouseenter(function() {
if (!active || $(this).hasClass('annotated')) {
return;
}
resetMatchedElement();
ancestor = $(this).closest("[id]");
matchedElement = $(this).first();
originalBgColor = $(matchedElement).css('background-color');
$(matchedElement).css('background-color', 'yellow');
$(matchedElement).bind('click.annotator', function(event) {
event.stopPropagation();
event.preventDefault();
self.port.emit('show',
[
document.location.toString(),
$(ancestor).attr("id"),
$(matchedElement).text()
]
);
});
});
$('*').mouseout(function() {
resetMatchedElement();
});
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