问题
This is basically a follow up on this question
I am trying to add custom tool tips to a jstree which show thumbnails of the image files if they mouse over them. It should use the node's a href value to mark up thumbnail and stick it in a tool tip. Referencing the above-mentioned post, I have managed to get it to show some arbitrary textual tool tip, but that is obviously not what I want.
If I were simply adding the tool tip to an img tag or an a tag by themselves, I doubt this would be an issue. But, I'm trying to create a custom tool tip for a link that's buried in a bunch of jstree node stuff.
For example:
.on('hover_node.jstree',function(e,data){
var $node = $("#" + data.node.id);
var url = $node.find('a').attr('href');
$("#" + data.node.id).prop('title', url);
})
does a fine job of ... just giving me a text tool tip. But I really don't know where to go from here, I have been beating my head against a wall for hours now, scouring the internet for viable solutions.
$(function () {
$(document).tooltip();
$('#treeView').jstree({
'core': {
'multiple': false,
'check_callback': true,
'data': {
'url': 'Temp/ajax.html',
'data': function (node) {
return { 'id': node.id };
}
}
},
'checkbox': {
'three_state': false,
'whole_node': false
},
'plugins': ["checkbox"]
}).on('hover_node.jstree',function(e,data){
var $node = $("#" + data.node.id);
var url = $node.find('a').attr('href');
$("#" + data.node.id).prop({ 'title': url, 'content': '<img src="' + url + '" alt=""/>' });
})
});
All I know is nothing I've tried has worked. I read all of the API docs for the JQuery tool tip plug in, but I'm still pretty new at this and it's become apparent that I won't be able to brute-force-and-ignorance my way into a solution.
UPDATE
So I have revised the code as follows:
.on('hover_node.jstree', function (e, data) {
var $node = $("#" + data.node.id);
var url = $node.find('a').attr('href');
if (url != '#') {
debugger
//get the mouse position
var x = $node.position().top + 20;
var y = $node.position().left;
$('.tooltip').css({ 'top': y + 'px', 'left': x + 'px' });
$('.tooltip').find('img').attr('src', url);
$('.tooltip').fadeIn(300, 'easeOutSine');
}
}).on('dehover_node.jstree', function () {
$('.tooltip').fadeOut(200);
});
and it works..ostensibly. NOW I need to actually figure out how to get the MOUSE POINTER coordinates, not the NODE coordinates. Every image I mouse over down the list, the tool tip shows further and further to the right. I'm figuring out a way to show it AT the mouse pointer.
LAST UPDATE
//assigning the right properties to the right
//variables would work wonders for my cause.
var x = $node.position().left;
var y = $node.position().top + 20;
回答1:
Since you cannot put images or other custom content in the title attribute, you will need to create the tooltip yourself. This can be done by simple positioning a div below where your hovering with the custom content. The below snippet shows how this can be done.
$(document).ready(function() {
var mouse_x = 0;
var mouse_y = 0;
$(document).mousemove(function(event) {
mouse_x = event.pageX;
mouse_y = event.pageY;
});
$('#custom_image_content').hide(); // Make sure the custom content does not show by default.
$('#jsTreeTest').jstree({
'core': {
'check_callback': true,
},
'plugins': ["checkbox", "dnd", "contextmenu"]
})
.on('hover_node.jstree', function(e, data) {
var $node = $("#" + data.node.id);
var url = $node.find('a').attr('href');
// $("#" + data.node.id).prop('title', url);
$('#custom_image_content').find('img').attr('src', url);
$('#custom_image_content')
.css('position', 'absolute')
//.css('top', $node.position().top + 20) // Add about 20 to ensure the div is not hovered when we re-position it.
//.css('left', $node.position().left)
.css('top', mouse_y)
.css('left', mouse_x)
.show();
})
.on('dehover_node.jstree', function() {
$('#custom_image_content').hide(); // Need to hide tooltip after we change hover targets.
});
});<link href="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.1.1/themes/default/style.min.css" rel="stylesheet" />
<link href="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.1.1/themes/default-dark/style.min.css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.1.1/jstree.min.js"></script>
<body>
<form id="form1" runat="server">
<div>
<div id="jsTreeTest">
<ul>
<li>Test
<ul>
<li>SubDir1
<ul>
<li><a href='https://www.google.com/images/srpr/logo11w.png'>File1.txt</a>
</li>
</ul>
</li>
<li>SubDir2
<ul>
<li>SubSubDir1
<ul>
<li><a href='https://www.google.com/images/srpr/logo11w.png'>File1.txt</a>
</li>
<li><a href='#'>File2.txt</a>
</li>
</ul>
<li><a href='https://www.google.com/images/srpr/logo11w.png'>File2.txt</a>
</li>
<li><a href='https://www.google.com/images/srpr/logo11w.png'>File3.txt</a>
</li>
</ul>
</li>
<li><a href='https://www.google.com/images/srpr/logo11w.png'>File4.txt</a>
</li>
<li><a href='https://s.yimg.com/rz/l/yahoo_en-US_f_p_142x37.png'>File5.txt</a>
</li>
</ul>
</li>
</ul>
</div>
</div>
</form>
<div id="custom_image_content">This is my custom content
<img src="" />
</div>
</body>EDIT: Updated with mouse y and x positions for tooltip placement.
来源：https://stackoverflow.com/questions/31418074/adding-jquery-custom-image-tool-tip-to-jstree