autolayout/dist/autolayout.min.js

Apple's Auto Layout and Visual Format Language for javascript (using cassowary constraints)

/**
* AutoLayout.js is licensed under the MIT license. If a copy of the
* MIT-license was not distributed with this file, You can obtain one at:
* http://opensource.org/licenses/mit-license.html.
*
* @author: Hein Rutjes (IjzerenHein)
* @license MIT
* @copyright Gloey Apps, 2017
*
* @library autolayout.js
* @version 0.7.0
*/
/**
* Parts Copyright (C) 2011-2012, Alex Russell (slightlyoff@chromium.org)
* Parts Copyright (C) Copyright (C) 1998-2000 Greg J. Badros
*
* Use of this source code is governed by the LGPL, which can be found in the
* COPYING.LGPL file.
*/
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.AutoLayout = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
"use strict";function _classCallCheck(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}function _processEqualSpacer(t,e){t.equalSpacerIndex=t.equalSpacerIndex||1;var r="_~"+t.lineIndex+":"+t.equalSpacerIndex+"~";t.equalSpacerIndex>1&&t.constraints.push({view1:"_~"+t.lineIndex+":1~",attr1:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,relation:t.relation.relation||Relation.EQU,view2:r,attr2:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,priority:t.relation.priority}),t.equalSpacerIndex++,t.relation.view||t.relation.multiplier&&1!==t.relation.multiplier?(t.constraints.push({view1:r,attr1:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,relation:t.relation.relation||Relation.EQU,view2:t.relation.view,attr2:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,priority:t.relation.priority,multiplier:t.relation.multiplier}),t.relation.multiplier=void 0):t.relation.constant&&(t.constraints.push({view1:r,attr1:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,relation:Relation.EQU,view2:null,attr2:Attribute.CONST,priority:t.relation.priority,constant:t.relation.constant}),t.relation.constant=void 0);for(var i=0;i<t.prevViews.length;i++){var n=t.prevViews[i];switch(t.orientation){case Orientation.HORIZONTAL:t.prevAttr=n!==e?Attribute.RIGHT:Attribute.LEFT,t.curAttr=Attribute.LEFT;break;case Orientation.VERTICAL:t.prevAttr=n!==e?Attribute.BOTTOM:Attribute.TOP,t.curAttr=Attribute.TOP;break;case Orientation.ZINDEX:t.prevAttr=Attribute.ZINDEX,t.curAttr=Attribute.ZINDEX,t.relation.constant=n!==e?"default":0}t.constraints.push({view1:n,attr1:t.prevAttr,relation:t.relation.relation,view2:r,attr2:t.curAttr,priority:t.relation.priority})}t.prevViews=[r]}function _processProportionalSpacer(t,e){t.proportionalSpacerIndex=t.proportionalSpacerIndex||1;var r="_-"+t.lineIndex+":"+t.proportionalSpacerIndex+"-";t.proportionalSpacerIndex++,t.constraints.push({view1:r,attr1:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,relation:t.relation.relation||Relation.EQU,view2:t.relation.view,attr2:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,priority:t.relation.priority,multiplier:t.relation.multiplier}),t.relation.multiplier=void 0;for(var i=0;i<t.prevViews.length;i++){var n=t.prevViews[i];switch(t.orientation){case Orientation.HORIZONTAL:t.prevAttr=n!==e?Attribute.RIGHT:Attribute.LEFT,t.curAttr=Attribute.LEFT;break;case Orientation.VERTICAL:t.prevAttr=n!==e?Attribute.BOTTOM:Attribute.TOP,t.curAttr=Attribute.TOP;break;case Orientation.ZINDEX:t.prevAttr=Attribute.ZINDEX,t.curAttr=Attribute.ZINDEX,t.relation.constant=n!==e?"default":0}t.constraints.push({view1:n,attr1:t.prevAttr,relation:t.relation.relation,view2:r,attr2:t.curAttr,priority:t.relation.priority})}t.prevViews=[r]}function _processStackView(t,e,r){for(var i=void 0,n=1;n<=4;n*=2)if(r.orientations&n&&r.stack.orientation!==n&&!(r.stack.processedOrientations&n)){r.stack.processedOrientations=r.stack.processedOrientations|n,i=i||{name:e,type:"stack"};for(var a=0,s=r.stack.subViews.length;a<s;a++)n===Orientation.ZINDEX?t.constraints.push({view1:i,attr1:Attribute.ZINDEX,relation:Relation.EQU,view2:r.stack.subViews[a],attr2:Attribute.ZINDEX}):(t.constraints.push({view1:i,attr1:n===Orientation.VERTICAL?Attribute.HEIGHT:Attribute.WIDTH,relation:Relation.EQU,view2:r.stack.subViews[a],attr2:n===Orientation.VERTICAL?Attribute.HEIGHT:Attribute.WIDTH}),t.constraints.push({view1:i,attr1:n===Orientation.VERTICAL?Attribute.TOP:Attribute.LEFT,relation:Relation.EQU,view2:r.stack.subViews[a],attr2:n===Orientation.VERTICAL?Attribute.TOP:Attribute.LEFT}))}}function _getRange(t,e){if(e===!0&&(e=t.match(/\.\.\d+$/),e&&(t=t.substring(0,t.length-e[0].length),e=parseInt(e[0].substring(2)))),!e)return[t];var r,i=t.match(/\d+$/),n=[];if(i)for(t=t.substring(0,t.length-i[0].length),r=parseInt(i);r<=e;r++)n.push(t+r);else for(n.push(t),r=2;r<=e;r++)n.push(t+r);return n}function _processCascade(t,e,r){var i=r?r.view:null,n=[],a=[],s=void 0;i&&(e.push({view:i}),a.push(i));for(var o=0;o<e.length;o++){var u=e[o];if(!Array.isArray(u)&&u.hasOwnProperty("view")||Array.isArray(u)&&u[0].view&&!u[0].relation)for(var c=Array.isArray(u)?u:[u],l=0;l<c.length;l++){u=c[l];for(var h=","===u?[]:u.view?_getRange(u.view,u.range):[null],p=0;p<h.length;p++){var f=h[p];if(a.push(f),f!==i&&(n.push(f),s=t.subViews[f],s||(s={orientations:0},t.subViews[f]=s),s.orientations=s.orientations|t.orientation,s.stack&&_processStackView(t,f,s)),void 0!==t.prevViews&&void 0!==f&&t.relation&&"none"!==t.relation.relation)for(var v=0;v<t.prevViews.length;v++){var d=t.prevViews[v];switch(t.orientation){case Orientation.HORIZONTAL:t.prevAttr=d!==i?Attribute.RIGHT:Attribute.LEFT,t.curAttr=f!==i?Attribute.LEFT:Attribute.RIGHT;break;case Orientation.VERTICAL:t.prevAttr=d!==i?Attribute.BOTTOM:Attribute.TOP,t.curAttr=f!==i?Attribute.TOP:Attribute.BOTTOM;break;case Orientation.ZINDEX:t.prevAttr=Attribute.ZINDEX,t.curAttr=Attribute.ZINDEX,t.relation.constant=d?t.relation.constant||"default":0}t.constraints.push({view1:d,attr1:t.prevAttr,relation:t.relation.relation,view2:f,attr2:t.curAttr,multiplier:t.relation.multiplier,constant:"default"!==t.relation.constant&&t.relation.constant?-t.relation.constant:t.relation.constant,priority:t.relation.priority})}var A=u.constraints;if(A)for(var g=0;g<A.length;g++)t.prevAttr=t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,t.curAttr=A[g].view||A[g].multiplier?A[g].attribute||t.prevAttr:A[g].variable?Attribute.VARIABLE:Attribute.CONST,t.constraints.push({view1:f,attr1:t.prevAttr,relation:A[g].relation,view2:A[g].view,attr2:t.curAttr,multiplier:A[g].multiplier,constant:A[g].constant,priority:A[g].priority});u.cascade&&_processCascade(t,u.cascade,u)}}else","!==u&&(t.prevViews=a,a=[],t.relation=u[0],void 0!==t.prevViews&&(t.relation.equalSpacing&&_processEqualSpacer(t,i),t.relation.multiplier&&_processProportionalSpacer(t,i)))}if(i){if(s=t.subViews[i]){if(s.stack){var b=new Error('A stack named "'+i+'" has already been created');throw b.column=r.$parserOffset+1,b}}else s={orientations:t.orientation},t.subViews[i]=s;s.stack={orientation:t.orientation,processedOrientations:t.orientation,subViews:n},_processStackView(t,i,s)}}function _getConst(t,e){var r=new c.Variable({value:e});return this._solver.addConstraint(new c.StayConstraint(r,c.Strength.required,0)),r}function _getSubView(t){return t?t.name?(this._subViews[t.name]=this._subViews[t.name]||new SubView({name:t.name,solver:this._solver}),this._subViews[t.name]._type=this._subViews[t.name]._type||t.type,this._subViews[t.name]):(this._subViews[t]=this._subViews[t]||new SubView({name:t,solver:this._solver}),this._subViews[t]):this._parentSubView}function _getSpacing(t){var e=4;if(t.view1||"left"!==t.attr1)if(t.view1||"top"!==t.attr1)if(t.view2||"right"!==t.attr2)if(t.view2||"bottom"!==t.attr2)switch(t.attr1){case"left":case"right":case"centerX":case"leading":case"trailing":e=4;break;case"zIndex":e=6;break;default:e=5}else e=2;else e=1;else e=0;else e=3;return this._spacingVars=this._spacingVars||new Array(7),this._spacingExpr=this._spacingExpr||new Array(7),this._spacingVars[e]||(this._spacingVars[e]=new c.Variable,this._solver.addEditVar(this._spacingVars[e]),this._spacingExpr[e]=c.minus(0,this._spacingVars[e]),this._solver.suggestValue(this._spacingVars[e],this._spacing[e])),this._spacingExpr[e]}function _addConstraint(t){var e=void 0,r=void 0!==t.multiplier?t.multiplier:1,i=void 0!==t.constant?t.constant:0;"default"===i&&(i=_getSpacing.call(this,t));var n=_getSubView.call(this,t.view1)._getAttr(t.attr1),a=void 0;t.attr2===Attribute.CONST?a=_getConst.call(this,void 0,t.constant):(a=_getSubView.call(this,t.view2)._getAttr(t.attr2),1!==r&&i?a=c.plus(c.times(a,r),i):i?a=c.plus(a,i):1!==r&&(a=c.times(a,r)));var s=void 0!==t.priority&&t.priority<1e3?new c.Strength("priority",0,t.priority,1e3):defaultPriorityStrength;switch(t.relation){case Relation.EQU:e=new c.Equation(n,a,s);break;case Relation.GEQ:e=new c.Inequality(n,c.GEQ,a,s);break;case Relation.LEQ:e=new c.Inequality(n,c.LEQ,a,s);break;default:throw"Invalid relation specified: "+t.relation}this._solver.addConstraint(e)}function 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c.Strength("required",this._name?998:999,1e3,1e3)),this._intrinsicHeight=t,this._solver.suggestValue(e,t),this._solver.resolve()}}},{key:"top",get:function(){return this._getAttrValue(Attribute.TOP)}},{key:"bottom",get:function(){return this._getAttrValue(Attribute.BOTTOM)}},{key:"centerX",get:function(){return this._getAttrValue(Attribute.CENTERX)}},{key:"centerY",get:function(){return this._getAttrValue(Attribute.CENTERY)}},{key:"zIndex",get:function(){return this._getAttrValue(Attribute.ZINDEX)}},{key:"type",get:function(){return this._type}}]),t}(),defaultPriorityStrength=new c.Strength("defaultPriority",0,1e3,1e3),View=function(){function t(e){_classCallCheck(this,t),this._solver=new c.SimplexSolver,this._subViews={},this._parentSubView=new SubView({solver:this._solver}),this.setSpacing(e&&void 0!==e.spacing?e.spacing:8),e&&(void 0===e.width&&void 0===e.height||this.setSize(e.width,e.height),e.constraints&&this.addConstraints(e.constraints))}return _createClass(t,[{key:"setSize",value:function(t,e){return this._parentSubView.intrinsicWidth=t,this._parentSubView.intrinsicHeight=e,this}},{key:"setSpacing",value:function(t){switch(Array.isArray(t)?t.length:-1){case-1:t=[t,t,t,t,t,t,1];break;case 1:t=[t[0],t[0],t[0],t[0],t[0],t[0],1];break;case 2:t=[t[1],t[0],t[1],t[0],t[0],t[1],1];break;case 3:t=[t[1],t[0],t[1],t[0],t[0],t[1],t[2]];break;case 6:t=[t[0],t[1],t[2],t[3],t[4],t[5],1];break;case 7:break;default:throw"Invalid spacing syntax"}if(!_compareSpacing(this._spacing,t)&&(this._spacing=t,this._spacingVars)){for(var e=0;e<this._spacingVars.length;e++)this._spacingVars[e]&&this._solver.suggestValue(this._spacingVars[e],this._spacing[e]);this._solver.resolve()}return this}},{key:"addConstraint",value:function(t){return _addConstraint.call(this,t),this}},{key:"addConstraints",value:function(t){for(var e=0;e<t.length;e++)_addConstraint.call(this,t[e]);return this}},{key:"width",get:function(){return this._parentSubView.intrinsicWidth}},{key:"height",get:function(){return this._parentSubView.intrinsicHeight}},{key:"fittingWidth",get:function(){return this._parentSubView.width}},{key:"fittingHeight",get:function(){return this._parentSubView.height}},{key:"subViews",get:function(){return this._subViews}}]),t}(),AutoLayout={Attribute:Attribute,Relation:Relation,Priority:Priority,VisualFormat:VisualFormat,View:View,SubView:SubView};module.exports=AutoLayout;
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