wisemapping-frontend/packages/mindplot/lib/components/DragTopic.js

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2021-07-16 16:41:58 +02:00
/*
* Copyright [2015] [wisemapping]
*
* Licensed under WiseMapping Public License, Version 1.0 (the "License").
* It is basically the Apache License, Version 2.0 (the "License") plus the
* "powered by wisemapping" text requirement on every single page;
* you may not use this file except in compliance with the License.
* You may obtain a copy of the license at
*
* http://www.wisemapping.org/license
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const Core = require('@wismapping/core-js')
const core = Core();
const ActionDispatcher = require('./ActionDispatcher').default
const DragPivot = require('./DragPivot').default;
const DragTopic = new Class({
initialize:function (dragShape, draggedNode, layoutManger) {
$assert(dragShape, 'Rect can not be null.');
$assert(draggedNode, 'draggedNode can not be null.');
$assert(layoutManger, 'layoutManger can not be null.');
this._elem2d = dragShape;
this._order = null;
this._draggedNode = draggedNode;
this._layoutManager = layoutManger;
this._position = new core.Point();
this._isInWorkspace = false;
this._isFreeLayoutEnabled = false;
},
setOrder:function (order) {
this._order = order;
},
setPosition:function (x, y) {
// Update drag shadow position ....
var position = {x:x, y:y};
if (this.isFreeLayoutOn() && this.isConnected()) {
var _layoutManager = this._layoutManager;
var par = this.getConnectedToTopic();
position = _layoutManager.predict(par.getId(), this._draggedNode.getId(), position, true).position;
}
this._position.setValue(position.x, position.y);
// Elements are positioned in the center.
// All topic element must be positioned based on the innerShape.
var draggedNode = this._draggedNode;
var size = draggedNode.getSize();
var cx = position.x - (position.x > 0 ? 0 : size.width);
var cy = Math.ceil(position.y - (size.height / 2));
this._elem2d.setPosition(cx, cy);
// In case is not free, pivot must be draw ...
if (this.isConnected() && !this.isFreeLayoutOn()) {
var parent = this.getConnectedToTopic();
var predict = this._layoutManager.predict(parent.getId(), this._draggedNode.getId(), this.getPosition());
if (this._order != predict.order) {
var dragPivot = this._getDragPivot();
var pivotPosition = predict.position;
dragPivot.connectTo(parent, pivotPosition);
this.setOrder(predict.order);
}
}
},
updateFreeLayout:function (event) {
var isFreeEnabled = (event.metaKey && Browser.Platform.mac) || (event.ctrlKey && !Browser.Platform.mac);
if (this.isFreeLayoutOn() != isFreeEnabled) {
var dragPivot = this._getDragPivot();
dragPivot.setVisibility(!isFreeEnabled);
this._isFreeLayoutEnabled = isFreeEnabled;
}
},
setVisibility:function (value) {
var dragPivot = this._getDragPivot();
dragPivot.setVisibility(value);
},
isVisible:function () {
var dragPivot = this._getDragPivot();
return dragPivot.isVisible();
},
getInnerShape:function () {
return this._elem2d;
},
disconnect:function (workspace) {
// Clear connection line ...
var dragPivot = this._getDragPivot();
dragPivot.disconnect(workspace);
},
connectTo:function (parent) {
$assert(parent, 'Parent connection node can not be null.');
// Where it should be connected ?
var predict = designer._eventBussDispatcher._layoutManager.predict(parent.getId(), this._draggedNode.getId(), this.getPosition());
// Connect pivot ...
var dragPivot = this._getDragPivot();
var position = predict.position;
dragPivot.connectTo(parent, position);
dragPivot.setVisibility(true);
this.setOrder(predict.order);
},
getDraggedTopic:function () {
return this._draggedNode;
},
removeFromWorkspace:function (workspace) {
if (this._isInWorkspace) {
// Remove drag shadow.
workspace.removeChild(this._elem2d);
// Remove pivot shape. To improve performance it will not be removed. Only the visibility will be changed.
var dragPivot = this._getDragPivot();
dragPivot.setVisibility(false);
this._isInWorkspace = false;
}
},
isInWorkspace:function () {
return this._isInWorkspace;
},
addToWorkspace:function (workspace) {
if (!this._isInWorkspace) {
workspace.append(this._elem2d);
var dragPivot = this._getDragPivot();
dragPivot.addToWorkspace(workspace);
this._isInWorkspace = true;
}
},
_getDragPivot:function () {
return DragTopic.__getDragPivot();
},
getPosition:function () {
return this._position;
},
isDragTopic:function () {
return true;
},
applyChanges:function (workspace) {
$assert(workspace, 'workspace can not be null');
var actionDispatcher = ActionDispatcher.getInstance();
var draggedTopic = this.getDraggedTopic();
var topicId = draggedTopic.getId();
var position = this.getPosition();
if (!this.isFreeLayoutOn()) {
var order = null;
var parent = null;
var isDragConnected = this.isConnected();
if (isDragConnected) {
var targetTopic = this.getConnectedToTopic();
order = this._order;
parent = targetTopic;
}
// If the node is not connected, position based on the original drag topic position.
actionDispatcher.dragTopic(topicId, position, order, parent);
} else {
actionDispatcher.moveTopic(topicId, position);
}
},
getConnectedToTopic:function () {
var dragPivot = this._getDragPivot();
return dragPivot.getTargetTopic();
},
isConnected:function () {
return this.getConnectedToTopic() != null;
},
isFreeLayoutOn:function () {
// return this._isFreeLayoutEnabled;
// Disable free layout ...
return false;
}
});
DragTopic.PIVOT_SIZE = {width:50, height:6};
DragTopic.init = function (workspace) {
$assert(workspace, "workspace can not be null");
var pivot = DragTopic.__getDragPivot();
workspace.append(pivot);
};
DragTopic.__getDragPivot = function () {
var result = DragTopic._dragPivot;
if (!$defined(result)) {
result = new DragPivot();
DragTopic._dragPivot = result;
}
return result;
};
export default DragTopic;