dna-router-behaviors_backup.html

<link rel="import" href="../polymer/polymer.html">
<link rel="import" href="../iron-ajax/iron-request.html">
<link rel="import" href="./dna-utility-behavior.html">
<script>
var DNA = {
	ready: false,
};

String.prototype.toCamelCase = function() {
    return this.replace(/^([A-Z])|[\s-_](\w)/g, function(match, p1, p2, offset) {
        if (p2) return p2.toUpperCase();
        return p1.toLowerCase();        
    });
};

(function(){
	var utility = {
		_resolveUrl: function(){
			// Extract hash from browser link
			// Redirect to home if invalid url
			// Get state using '_resolveRoute'
			// Go to that state
			// console.log wrong url for no state
			var url = location.hash;
			if(url != ''){
				var route = url.substring(1);
				if(route[route.length-1]=='/')
					route = route.substring(0,route.length-1);
				if(route=='')
					route='/'

				var res = utility._resolveRoute(route);
				if(res.found)
					utility.go(res.found, res.param, true)
				else
					console.log('wrong url')
			}
			else{
				utility.go(config.home)
			}
		},
		_resolveRoute: function(route){
			// Takes post hash url as input
			// Resolve current state name and parameters
			// return state and parameters
			var found = false;
			var param = {};
			for(var i=0; i< states.length; i++){
				var state = states[i];
				var patt = new RegExp(state.regRoute,'i');
				var res = patt.exec(route);
				if(res){
					found = state.state;
					if(state.params){
						for(var i=0; i<state.params.length;i++){
							param[state.params[i]] = res[1+i]
						}
					}
					break;
				}
			}
			return {found: found, param: param};
		},
		getState: function(state){
			var s=false;
			states.forEach(function(e){
				if(e.state == state)
					s = e;
			})
			return s;
		},
		_paramOk: function(state, param){
			// Check for parameter inconsistency
			if(param==undefined)
				param = {};
			state = utility.getState(state);
			var ok = true;
			if(state.params){
				for(var i=0; i<state.params.length; i++)
					if(!(state.params[i] in param)){
						ok = false;
						break;
					}
			}
			return ok;
		},
		go: function(next, params, resolve){
			if(next){
				if(next == 'error'){
					utility.notify(current, 'dna-leave');
					current = next;
					currentParams = params;
					utility.notify(current, 'dna-load');
				}
				else if(utility._paramOk(next, params)){
					var state = utility.getState(next);
					if(current){
						utility.notify(current, 'page-leave');
					}
					var previous = current;

					current = next;
					currentParams = params;
					state.hash = state.route;
					for(attr in params){
						state.hash = state.hash.replace(':'+attr, params[attr])
					}
					// Send Param data
					if(state){
						var data={};
						data.route = state.route;
						data.hash = state.hash;
						data.previous = previous;
						data.params = params;
						data.current = current;
						data.state = current;
						utility.notify(current, 'page-load-begin', data);
						if(resolve != true){
							window.history.pushState(null, null, '#'+state.hash)
						}
					}
					else{
						console.log('ERROR: Selected state not found')
					}
				}
				else{
					console.log('Check Parameter')
				}
			}
			else{
				console.log('ERROR : Invalid state')
			}
		},
		notify: function(state, name, data){
			views.forEach(function(view){
				if(view.state){
		    		var res = view.state.split(' ');
		    		for(var i=0; i<res.length; i++){
		    			if(res[i]==state){
							view.fire(name, data);
		    				break;
		    			}
		    		}
		    	}
			})
		},
	};


	var config = {
		auth: false,
		home: 'home',
		template: '',
	};
	var loggedin = false;
	var configured = true;
	var auth=null;

	DnaConfigBehavior = {
		properties: {
			auth: {
				type: Boolean,
				value: false,
				observer: '_authStatusChanged',
			},
			template: {
				type: String,
				observer: '_templateUrl',
			},
			home: {
				type: String,
				observer: '_homeChanged'
			},
		},
		_authStatusChanged: function(){
			config.auth = this.auth;
			if(DNA.ready){
				console.log(this.auth)
				utility._resolveUrl();
			}
		},
		_templateUrl: function(){
			config.template = this.template;
		},
		_homeChanged: function(){
			config.home = this.home;
		},
	};

	// State related Data
	var states = [];
	var current = null;
	var currentParams = null;

	StateManager= {
		formatRoute: function(route){
			if(route!='/'|| route.length>1){
				if(route[0]!='/')
					route = '/'+route;
				if(route[route.length-1] == '/')
					route = route.substring(0, route.length-1);
			}
			return route;
		},
		getParams: function(route){
			var patt = /\/:[0-9a-z]+/ig;
			var res = route.match(patt);
			if(res){
				for(var i=0; i<res.length; i++)
					res[i] = res[i].substring(2);
			}
			return res;
		},
		getRegX: function(route, param){
			var patt = "([0-9a-z-]+)";
			if(param){
				param.forEach(function(p){
					route = route.replace(':'+p, patt);
				})
			}
			route = route.replace(/\//g,'\\/');
			route = '^'+route+'$';
			return route;
		},
	}
	DnaStateRegisterBehavior = {
		properties: {
			state: {
				type: String,
			},
			route: {
				type: String,
			},
			params: {
				type: Object,
			},
			regRoute: {
				type: String,
			},
		},
		attached: function(){
			this.register();
		},
		register: function(){
			if(this.state && this.route){
				this.route = StateManager.formatRoute(this.route);
				this.params = StateManager.getParams(this.route);
				this.regRoute = StateManager.getRegX(this.route, this.params);

				states.push(this);
			}
			else{
				console.log('WARNING in DNA-state-provider: some state cannot be registered.')
			}
		},
	};
	// View Related Data
	var views = [];
	var manyViews = []

	var totalViews = 0;
	var viewsReady = false;

window.addEventListener('WebComponentsReady', function() {
	DNA.ready =true;
	if(DNA.run){
		DNA.run()
	}

	srefs.forEach(function(sref){
		sref._setHREF();
	})
	utility._resolveUrl()
})


	var srefs = [];
	DnaSrefBehavior = {
		properties: {
			goto: {
				type: Object,
				observer: '_setHREF'
			}
		},
		attached: function(){
			srefs.push(this)
		},
		go: utility.go,
		_setHREF: function(){
			if(DNA.ready){
				var state = utility.getState(this.goto[0])
				var params = this.goto[1]
				var hash = state.route;

				for(attr in params){
					hash = hash.replace(':'+attr, params[attr])
				}
				this.setAttribute('href', '#'+hash);
			}
		},
	}

	DnaViewBehavior = {
		hostAttributes: {
			'with-auth': false,
			'with-no-auth': false,
			active: false,
		},
		properties: {
			state: {
				type: String,
			},
			template: {
				type: String,
				value: '',
			},
			element: {
				type: String,
			},
			elseElement: {
				type: String,
			},
			elseState: {
				type: String,
			},
		},
		listeners: {
			'page-load-begin': '_pageLoadBegin',
			'page-leave': '_pageLeave',
		},
	    attached: function() {
	    	views.push(this);
	    },
		getStates: function(){
			return states;
		},
		go:	utility.go,
		current: function(){
			return current;
		},
		_pageLoadBegin: function(e){
	        var self = this;
	        var element = false;
	        var template = config.template + this.template;

	        var withAuth = this.getAttribute('with-auth');
	        var withNoAuth = this.getAttribute('with-no-auth');

        	var goElse = false;
        	if((withAuth!=null && !config.auth) || (withNoAuth!=null && config.auth)){
        		goElse = true;
        	}

        	if(goElse){
        		if(this.elseElement)
        			element = this.elseElement;
        		else if(this.elseState)
        			utility.go(this.elseState)
        		else
        			console.log('Error')
        	}
        	else{
	        	element = this.element;
        	}


        	if(element){
	        	var file = '/'+element.toCamelCase()+'.html';
	        	template +=file;

		        Polymer.Base.importHref(template ,function(){
		        	self.innerHTML='';
		            var el = document.createElement(element);
		            el.$state = e.detail;
		            el.$state.go = utility.go;

		            self.appendChild(el);
		            self.setAttribute('active', true)
		        });
		    }
		},
		_pageLeave: function(){
	        this.removeAttribute('active')
	        this.innerHTML = ''
		},
	};

	DnaManyViewBehavior = {
		hostAttributes: {
			active: false,
		},
		properties: {
			state: {
				type: String,
			}
		},
		listeners: {
			'page-load-begin': '_pageLoadBegin',
			'page-leave': '_pageLeave',
		},
	    attached: function() {
	    	views.push(this);
	    },
		_pageLoadBegin: function(e){
			if(e.detail.state == current)
	        	this.setAttribute('active', true);
		},
		_pageLeave: function(e){
			// if(e.detail.state != current)
	        	this.removeAttribute('active');
		},
	}

	var ignoreHashChange = false;

	window.onhashchange = function(e){
		// console.log(e)
			utility._resolveUrl();
	}
	// window.addEventListener('popstate', function(e) {
	// 	if(viewsReady && !ignoreHashChange)
	// 		utility._resolveUrl();
	// 	ignoreHashChange = false;
	//   	// console.log(window.location)
	// });

})();


    Polymer({
    	is: 'dna-config',
    	behaviors: [DnaConfigBehavior],
    });




</script>