When the tile queue loads a tile it registers a "change" listener on that tile. But currently that listener is not unregistered, unless the tile cache containing that tile fills up and "dipose" is called on that tile.
This commit makes handleTileChange deregister the "change" listener on the tile, if the tile is now in "loaded" state.
This commit unregisters the viewport resize listener when setTarget(null) is called, and registers it when setTarget(target) is called, and when we don't have that listener registered yet.
This prevents memory leaks where references to map objects are retained because of these viewport resize listeners.
Geometry index won't be updated correctly if feature geometry is changed using `feature.setGeometry(new_geometry)`
ol.interaction.Snap should listen for a 'change:geometry' event on ol.Feature
More than one features can be be changed while handlingDownUpSequence
exampe: ol.interaction.Modify supports simultaneous editing of multiple features
When a geometry changes old indexed segments are searched by the feature extend and removed. New ones are added.
Old feature extent sholud be used when removing the old indexed segments.
This commit changes ol.Snap -> ol.interaction.Snap, which extends
ol.interaction.Pointer. The 'pointerdown', 'pointermove' and
'pointerup' map browser events are hanlded to edit the pixel and
coordinate properties to make them 'snap' to the closest feature.
handlePointerMove_ doesn't need to be called when dragging.
handleDragEvent_ takes care of the event in that case.
in handleDragEvent_, createOrUpdateVertexFeature_ doesn't need to be called for each dragged segment. it can be called only once with current vertex.
fixes made to pass the build
Prevent vertexFeature_ from ol.interaction.Modify from being selected by ol.interaction.Select.
The bug occurs when an delete attempt fails. ex: clicikng on the first or last node of LineString,
or clicking a line segment between two nodes.
This commit fixes the bug that occurs when trying to modify
a closed LineString by clicking on the starting/ending node.
Such a closed line is added to the modify-test example.
Fix a bug in ol.interaction.Modify when trying to delete nodes
on a geometry that has duplicate nodes. A bug occurs when
clicking on the duplicate node.
