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navigation.js
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navigation.js
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/* -*- Mode: JavaScript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
Refactor from Contact Navigation Gaia
*/
'use strict';
function navigationStack(currentView) {
var transitions = {
'left-right': { from: 'transition-left', to: 'transition-right'},
'top-bottom': { from: 'transition-bottom', to: 'transition-top'},
'right-left': { from: 'transition-right', to: 'transition-left'},
'bottom-top': { from: 'transition-top', to: 'transition-bottom'},
'popup': { from: 'popup', to: 'popup'},
'none': { from: 'none', to: 'none'}
};
var _currentView = currentView;
var app = document.getElementById('app');
var cache = document.getElementById('cache');
var transitionTimeout = 0;
var stack = [];
stack.push({view: currentView, transition: 'none'});
var revertTransition = function(transition) {
return {
from: transitions[transition].to,
to: transitions[transition].from
};
};
var setAppView = function(current, next) {
current.dataset.state = 'inactive';
next.dataset.state = 'active';
};
var setCacheView = function(current, next, transition, callback) {
current.classList.add('transitioning');
next.classList.add('transitioning');
var currentMirror = document.getElementById(current.dataset.mirror);
var nextMirror = document.getElementById(next.dataset.mirror);
var move = transitions[transition] || transition;
clearTimeout(transitionTimeout);
transitionTimeout = setTimeout(function animate() {
current.classList.add(move.to);
next.classList.remove(move.from);
}, 1);
next.addEventListener('transitionend', function nocache() {
setAppView(current, next);
next.removeEventListener('transitionend', nocache);
current.classList.remove('transitioning');
next.classList.remove('transitioning');
if (typeof callback === 'function') {
setTimeout(callback, 0);
}
});
};
this.go = function go(nextView, transition) {
if (_currentView === nextView)
return;
var current = document.getElementById(_currentView);
var next = document.getElementById(nextView);
switch (transition) {
case 'none':
setAppView(current, next);
break;
case 'popup':
showPopup(current, next);
break;
default:
setCacheView(current, next, transition);
break;
}
stack.push({ view: nextView, transition: transition});
_currentView = nextView;
};
this.back = function back(callback) {
if (stack.length < 2) {
if (typeof callback === 'function') {
setTimeout(callback, 0);
}
return;
}
var currentView = stack.pop();
var current = document.getElementById(currentView.view);
var nextView = stack[stack.length - 1];
var next = document.getElementById(nextView.view);
switch (currentView.transition) {
case 'none':
setAppView(current, next);
if (typeof callback === 'function') {
setTimeout(callback, 0);
}
break;
case 'popup':
hidePopup(current, next, callback);
break;
default:
var reverted = revertTransition(currentView.transition);
setCacheView(current, next, reverted, callback);
break;
}
_currentView = nextView.view;
};
this.home = function home(callback) {
if (stack.length < 2) {
if (typeof callback === 'function') {
setTimeout(callback, 0);
}
return;
}
while (stack.length > 1) {
this.back(callback);
}
};
var showPopup = function c_showPopup(current, next) {
next.dataset.state = 'active';
var nextMirror = document.getElementById(next.dataset.mirror);
var currentMirror = document.getElementById(current.dataset.mirror);
next.classList.remove('transition-bottom');
next.addEventListener('transitionend', function hideView() {
current.dataset.state = 'inactive';
currentMirror.style.display = 'none';
nextMirror.classList.remove('transition-bottom');
next.removeEventListener('transitionend', hideView);
});
}
var hidePopup = function c_hidePopup(current, next, callback) {
next.dataset.state = 'active';
current.classList.add('transition-bottom');
var nextMirror = document.getElementById(next.dataset.mirror);
var currentMirror = document.getElementById(current.dataset.mirror);
nextMirror.style.display = '';
current.addEventListener('transitionend', function hideView() {
current.dataset.state = 'inactive';
currentMirror.classList.add('transition-bottom');
if (typeof callback === 'function') {
setTimeout(callback, 0);
}
current.removeEventListener('transitionend', hideView);
});
}
this.currentView = function currentView() {
return _currentView != null ? _currentView : '';
};
}
var navigation;
var sendMsg = function(msg) {
window.postMessage(JSON.stringify(msg),'*');
}
window.onload = function() {
navigation = new navigationStack('view-events-list');
}