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Ensure IE/Edge compatibility for routing drag&drop

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Use the DataTransfer interface properly, using the `text` format, as
IE/Edge does not support much more. We can JSON-serialize anything
there, even though right now, only a single string would be enough.

Also, IE does not support .setDragImage, so check for support prior
to calling.

Fixes #1343
This commit is contained in:
Mormegil 2016-10-27 12:34:07 +02:00
parent fc8b69f844
commit caac9a9403
1 changed files with 10 additions and 5 deletions
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15
app/assets/javascripts/index/directions.js
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@ -302,10 +302,14 @@ OSM.Directions = function (map) {
});
$(".routing_marker").on('dragstart', function (e) {
e.originalEvent.dataTransfer.effectAllowed = 'move';
e.originalEvent.dataTransfer.setData('type', $(this).data('type'));
var img = $("<img>").attr("src", $(e.originalEvent.target).attr("src"));
e.originalEvent.dataTransfer.setDragImage(img.get(0), 12, 21);
var dt = e.originalEvent.dataTransfer;
dt.effectAllowed = 'move';
var dragData = { type: $(this).data('type') };
dt.setData('text', JSON.stringify(dragData));
if (dt.setDragImage) {
var img = $("<img>").attr("src", $(e.originalEvent.target).attr("src"));
dt.setDragImage(img.get(0), 12, 21);
}
});
var page = {};
@ -321,7 +325,8 @@ OSM.Directions = function (map) {
$("#map").on('drop', function (e) {
e.preventDefault();
var oe = e.originalEvent;
var type = oe.dataTransfer.getData('type');
var dragData = JSON.parse(oe.dataTransfer.getData('text'));
var type = dragData.type;
var pt = L.DomEvent.getMousePosition(oe, map.getContainer()); // co-ordinates of the mouse pointer at present
pt.y += 20;
var ll = map.containerPointToLatLng(pt);