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import define from '../../define';
import * as is from '../../is';
import * as math from '../../math';
import * as util from '../../util';
let fn, elesfn;
let beforePositionSet = function( eles, newPos, silent ){
for( let i = 0; i < eles.length; i++ ){
let ele = eles[i];
if( !ele.locked() ){
let oldPos = ele._private.position;
let delta = {
x: newPos.x != null ? newPos.x - oldPos.x : 0,
y: newPos.y != null ? newPos.y - oldPos.y : 0
};
if( ele.isParent() && !(delta.x === 0 && delta.y === 0) ){
ele.children().shift( delta, silent );
}
ele.dirtyBoundingBoxCache();
}
}
};
let positionDef = {
field: 'position',
bindingEvent: 'position',
allowBinding: true,
allowSetting: true,
settingEvent: 'position',
settingTriggersEvent: true,
triggerFnName: 'emitAndNotify',
allowGetting: true,
validKeys: [ 'x', 'y' ],
beforeGet: function( ele ){
ele.updateCompoundBounds();
},
beforeSet: function( eles, newPos ){
beforePositionSet( eles, newPos, false );
},
onSet: function( eles ){
eles.dirtyCompoundBoundsCache();
},
canSet: function( ele ){
return !ele.locked();
}
};
fn = elesfn = ({
position: define.data( positionDef ),
// position but no notification to renderer
silentPosition: define.data( util.assign( {}, positionDef, {
allowBinding: false,
allowSetting: true,
settingTriggersEvent: false,
allowGetting: false,
beforeSet: function( eles, newPos ){
beforePositionSet( eles, newPos, true );
},
onSet: function( eles ){
eles.dirtyCompoundBoundsCache();
}
} ) ),
positions: function( pos, silent ){
if( is.plainObject( pos ) ){
if( silent ){
this.silentPosition( pos );
} else {
this.position( pos );
}
} else if( is.fn( pos ) ){
let fn = pos;
let cy = this.cy();
cy.startBatch();
for( let i = 0; i < this.length; i++ ){
let ele = this[ i ];
let pos;
if( ( pos = fn(ele, i) ) ){
if( silent ){
ele.silentPosition( pos );
} else {
ele.position( pos );
}
}
}
cy.endBatch();
}
return this; // chaining
},
silentPositions: function( pos ){
return this.positions( pos, true );
},
shift: function( dim, val, silent ){
let delta;
if( is.plainObject( dim ) ){
delta = {
x: is.number(dim.x) ? dim.x : 0,
y: is.number(dim.y) ? dim.y : 0
};
silent = val;
} else if( is.string( dim ) && is.number( val ) ){
delta = { x: 0, y: 0 };
delta[ dim ] = val;
}
if( delta != null ){
let cy = this.cy();
cy.startBatch();
for( let i = 0; i < this.length; i++ ){
let ele = this[i];
// exclude any node that is a descendant of the calling collection
if (cy.hasCompoundNodes() && ele.isChild() && ele.ancestors().anySame(this)) {
continue;
}
let pos = ele.position();
let newPos = {
x: pos.x + delta.x,
y: pos.y + delta.y
};
if( silent ){
ele.silentPosition( newPos );
} else {
ele.position( newPos );
}
}
cy.endBatch();
}
return this;
},
silentShift: function( dim, val ){
if( is.plainObject( dim ) ){
this.shift( dim, true );
} else if( is.string( dim ) && is.number( val ) ){
this.shift( dim, val, true );
}
return this;
},
// get/set the rendered (i.e. on screen) positon of the element
renderedPosition: function( dim, val ){
let ele = this[0];
let cy = this.cy();
let zoom = cy.zoom();
let pan = cy.pan();
let rpos = is.plainObject( dim ) ? dim : undefined;
let setting = rpos !== undefined || ( val !== undefined && is.string( dim ) );
if( ele && ele.isNode() ){ // must have an element and must be a node to return position
if( setting ){
for( let i = 0; i < this.length; i++ ){
let ele = this[ i ];
if( val !== undefined ){ // set one dimension
ele.position( dim, ( val - pan[ dim ] ) / zoom );
} else if( rpos !== undefined ){ // set whole position
ele.position( math.renderedToModelPosition( rpos, zoom, pan ) );
}
}
} else { // getting
let pos = ele.position();
rpos = math.modelToRenderedPosition( pos, zoom, pan );
if( dim === undefined ){ // then return the whole rendered position
return rpos;
} else { // then return the specified dimension
return rpos[ dim ];
}
}
} else if( !setting ){
return undefined; // for empty collection case
}
return this; // chaining
},
// get/set the position relative to the parent
relativePosition: function( dim, val ){
let ele = this[0];
let cy = this.cy();
let ppos = is.plainObject( dim ) ? dim : undefined;
let setting = ppos !== undefined || ( val !== undefined && is.string( dim ) );
let hasCompoundNodes = cy.hasCompoundNodes();
if( ele && ele.isNode() ){ // must have an element and must be a node to return position
if( setting ){
for( let i = 0; i < this.length; i++ ){
let ele = this[ i ];
let parent = hasCompoundNodes ? ele.parent() : null;
let hasParent = parent && parent.length > 0;
let relativeToParent = hasParent;
if( hasParent ){
parent = parent[0];
}
let origin = relativeToParent ? parent.position() : { x: 0, y: 0 };
if( val !== undefined ){ // set one dimension
ele.position( dim, val + origin[ dim ] );
} else if( ppos !== undefined ){ // set whole position
ele.position({
x: ppos.x + origin.x,
y: ppos.y + origin.y
});
}
}
} else { // getting
let pos = ele.position();
let parent = hasCompoundNodes ? ele.parent() : null;
let hasParent = parent && parent.length > 0;
let relativeToParent = hasParent;
if( hasParent ){
parent = parent[0];
}
let origin = relativeToParent ? parent.position() : { x: 0, y: 0 };
ppos = {
x: pos.x - origin.x,
y: pos.y - origin.y
};
if( dim === undefined ){ // then return the whole rendered position
return ppos;
} else { // then return the specified dimension
return ppos[ dim ];
}
}
} else if( !setting ){
return undefined; // for empty collection case
}
return this; // chaining
}
});
// aliases
fn.modelPosition = fn.point = fn.position;
fn.modelPositions = fn.points = fn.positions;
fn.renderedPoint = fn.renderedPosition;
fn.relativePoint = fn.relativePosition;
export default elesfn;
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