# all files / Github/bpmn-js/lib/features/modeling/behavior/ FixHoverBehavior.js

100% Statements 30/30
88% Branches 22/25
100% Functions 5/5
100% Lines 30/30

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99

    1×

    1128×

    232×
    232×
    232×

    232×
    6×
    6×

    232×

    232×
    12×
    12×

    1128×

    17×

    17×
    2×
    2×

    1128×

    10×
    10×
    10×

    10×
    2×
    2×

    1128×

    16×
    16×

    16×
    1×

    1×

     import { getLanesRoot } from '../util/LaneUtil';

    import { is } from '../../../util/ModelUtil';

    import { isAny } from '../util/ModelingUtil';

    var HIGH_PRIORITY = 1500;

    /**
     * Correct hover targets in certain situations to improve diagram interaction.
     *
     * @param {ElementRegistry} elementRegistry
     * @param {EventBus} eventBus
     * @param {Canvas} canvas
     */
    export default function FixHoverBehavior(elementRegistry, eventBus, canvas) {

      eventBus.on([
        'create.hover',
        'create.move',
        'create.end',
        'shape.move.hover',
        'shape.move.move',
        'shape.move.end'
      ], HIGH_PRIORITY, function(event) {
        var context = event.context,
            shape = context.shape || event.shape,
            hover = event.hover;

        // ensure elements are not dropped onto a bpmn:Lane but onto
        // the underlying bpmn:Participant
        if (is(hover, 'bpmn:Lane') && !isAny(shape, [ 'bpmn:Lane', 'bpmn:Participant' ])) {
          event.hover = getLanesRoot(hover);
          event.hoverGfx = elementRegistry.getGraphics(event.hover);
        }

        var rootElement = canvas.getRootElement();

        // ensure bpmn:Group and label elements are dropped
        // always onto the root
        if (hover !== rootElement && (shape.labelTarget || is(shape, 'bpmn:Group'))) {
          event.hover = rootElement;
          event.hoverGfx = elementRegistry.getGraphics(event.hover);
        }
      });

      eventBus.on([
        'connect.hover',
        'global-connect.hover'
      ], HIGH_PRIORITY, function(event) {
        var hover = event.hover;

        // ensure connections start/end on bpmn:Participant,
        // not the underlying bpmn:Lane
        if (is(hover, 'bpmn:Lane')) {
          event.hover = getLanesRoot(hover) || hover;
          event.hoverGfx = elementRegistry.getGraphics(event.hover);
        }
      });

      eventBus.on([
        'bendpoint.move.hover'
      ], HIGH_PRIORITY, function(event) {
        var context = event.context,
            type = context.type,
            hover = event.hover;

        // ensure reconnect start/end on bpmn:Participant,
        // not the underlying bpmn:Lane
        if (is(hover, 'bpmn:Lane') && /reconnect/.test(type)) {
          event.hover = getLanesRoot(hover) || hover;
          event.hoverGfx = elementRegistry.getGraphics(event.hover);
        }
      });

      eventBus.on([
        'connect.start'
      ], HIGH_PRIORITY, function(event) {

        var context = event.context,
            source = context.source;

        // ensure connect start on bpmn:Participant,
        // not the underlying bpmn:Lane
        if (is(source, 'bpmn:Lane')) {
          context.source = getLanesRoot(source) || source;
        }
      });

    }

    FixHoverBehavior.$inject = [
      'elementRegistry',
      'eventBus',
      'canvas'
    ];