mirror of
https://github.com/FoggedLens/iD.git
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7e68e8e114
This is a facade interface that ties together a bunch of different internal objects and will make it easier to write tests for behaviors, modes, and operations.
57 lines
1.7 KiB
JavaScript
57 lines
1.7 KiB
JavaScript
iD.behavior.DragNode = function(context) {
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var size = context.map().size(),
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nudgeInterval;
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function edge(point) {
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var pad = [30, 100, 30, 100];
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if (point[0] > size[0] - pad[0]) return [-10, 0];
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else if (point[0] < pad[2]) return [10, 0];
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else if (point[1] > size[1] - pad[1]) return [0, -10];
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else if (point[1] < pad[3]) return [0, 10];
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return null;
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}
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function startNudge(nudge) {
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if (nudgeInterval) window.clearInterval(nudgeInterval);
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nudgeInterval = window.setInterval(function() {
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context.map().pan(nudge).redraw();
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}, 50);
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}
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function stopNudge(nudge) {
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if (nudgeInterval) window.clearInterval(nudgeInterval);
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nudgeInterval = null;
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}
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function annotation(entity) {
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return t('operations.move.annotation.' + entity.geometry(context.graph()));
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}
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return iD.behavior.drag()
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.delegate(".node")
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.origin(function(entity) {
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return context.projection(entity.loc);
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})
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.on('start', function() {
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context.perform(
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iD.actions.Noop());
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})
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.on('move', function(entity) {
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d3.event.sourceEvent.stopPropagation();
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var nudge = edge(d3.event.point);
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if (nudge) startNudge(nudge);
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else stopNudge();
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context.replace(
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iD.actions.MoveNode(entity.id, context.projection.invert(d3.event.point)),
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annotation(entity));
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})
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.on('end', function(entity) {
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stopNudge();
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context.replace(
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iD.actions.Noop(),
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annotation(entity));
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});
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};
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