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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
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();
}
});
function getInnerText(element) {
// jQuery.text() returns content of <script> tags, we need to ignore those
var list = [];
element.find("*").andSelf().contents()
.filter(function () {
return this.nodeType == 3 && this.parentNode.tagName != "SCRIPT";
})
.each(function () {
list.push(this.nodeValue);
});
return list.join("");
}
$('*').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"),
getInnerText(matchedElement)
]
);
});
});
$('*').mouseout(function() {
resetMatchedElement();
});
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