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EdgeReconnectionPortCandidateProvider.js
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EdgeReconnectionPortCandidateProvider.js
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/****************************************************************************
** @license
** This demo file is part of yFiles for HTML 2.6.
** Copyright (c) 2000-2024 by yWorks GmbH, Vor dem Kreuzberg 28,
** 72070 Tuebingen, Germany. All rights reserved.
**
** yFiles demo files exhibit yFiles for HTML functionalities. Any redistribution
** of demo files in source code or binary form, with or without
** modification, is not permitted.
**
** Owners of a valid software license for a yFiles for HTML version that this
** demo is shipped with are allowed to use the demo source code as basis
** for their own yFiles for HTML powered applications. Use of such programs is
** governed by the rights and conditions as set out in the yFiles for HTML
** license agreement.
**
** THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY EXPRESS OR IMPLIED
** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
** NO EVENT SHALL yWorks BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
** TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
** PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
** LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
** NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
***************************************************************************/
import {
BaseClass,
DefaultPortCandidate,
FreeNodePortLocationModel,
IEdge,
IEdgeReconnectionPortCandidateProvider,
IEnumerable,
IInputModeContext,
IPortCandidate,
IPortCandidateProvider,
List
} from 'yfiles'
/**
* An {@link IEdgeReconnectionPortCandidateProvider} that allows moving ports to
* any other port candidate that another node provides.
*/
export default class EdgeReconnectionPortCandidateProvider extends BaseClass(
IEdgeReconnectionPortCandidateProvider
) {
/**
* @param {!IEdge} edge
*/
constructor(edge) {
super()
this.edge = edge
}
/**
* Gets a list of port candidates for edge reconnection that matches the list of candidates the
* IPortCandidateProvider interface returns.
* @returns {!IEnumerable.<IPortCandidate>} The list of source port candidates
* @param {!IInputModeContext} context
*/
getSourcePortCandidates(context) {
return this.getPortCandidates(context, true)
}
/**
* Gets a list of port candidates for edge reconnection that matches the list of candidates the
* IPortCandidateProvider interface returns.
* @returns {!IEnumerable.<IPortCandidate>} The list of target port candidates
* @param {!IInputModeContext} context
*/
getTargetPortCandidates(context) {
return this.getPortCandidates(context, false)
}
/**
* @param {!IInputModeContext} context
* @param {boolean} source
* @returns {!IEnumerable.<IPortCandidate>}
*/
getPortCandidates(context, source) {
const result = new List()
// add the current one as the default
const port = source ? this.edge.sourcePort : this.edge.targetPort
result.add(new DefaultPortCandidate(port))
const graph = context.graph
if (!graph) {
return result
}
for (const node of graph.nodes) {
const provider = node.lookup(IPortCandidateProvider.$class)
// If available, use the candidates from the provider. Otherwise, add a default candidate.
if (provider) {
const candidates = source
? provider.getAllSourcePortCandidates(context)
: provider.getAllTargetPortCandidates(context)
result.addRange(candidates)
} else {
result.add(new DefaultPortCandidate(node, FreeNodePortLocationModel.NODE_CENTER_ANCHORED))
}
}
return result
}
}