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ItemsComponentModel #179

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merged 23 commits into from
Jun 26, 2018
Merged

ItemsComponentModel #179

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2ef1a03
remove maintainer comment
lc-thomasberger Feb 2, 2018
7233489
split into model and view
lc-thomasberger Feb 2, 2018
6e2e9fc
set stage on change event for active item in collection
lc-thomasberger Feb 5, 2018
34c5aff
remove NarrativeModel
lc-thomasberger Feb 6, 2018
99c9c5f
refactor animation
lc-thomasberger Feb 7, 2018
0796892
rename method to setActiveItem
lc-thomasberger Feb 8, 2018
c472ee1
updated to add review
lc-thomasberger Feb 20, 2018
a29859a
added review
lc-thomasberger Mar 20, 2018
80c870b
added review
lc-thomasberger Mar 21, 2018
7b9c9fb
switch to _children, tranisition strapline-header
lc-thomasberger May 28, 2018
d56ea09
Merge branch 'master' into items
oliverfoster May 29, 2018
11078e7
handle visited state
lc-thomasberger May 30, 2018
4cbe8ca
Merge branch 'items' of https://github.com/adaptlearning/adapt-contri…
lc-thomasberger May 30, 2018
b2c479b
use
lc-thomasberger Jun 5, 2018
29ec474
resolve conflict
lc-thomasberger Jun 5, 2018
9b89d5a
fix #2100
lc-thomasberger Jun 5, 2018
3cb171c
remove .narrative-item-title rules
lc-thomasberger Jun 5, 2018
cc5b804
added review
lc-thomasberger Jun 12, 2018
afdac59
add review
lc-thomasberger Jun 19, 2018
60f9ea6
update
lc-thomasberger Jun 19, 2018
7b69b76
add review
lc-thomasberger Jun 20, 2018
e4806b0
update _isInitial
lc-thomasberger Jun 21, 2018
585b5ea
fix styling for _hasNavigationInTextArea option
lc-thomasberger Jun 26, 2018
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374 changes: 9 additions & 365 deletions js/adapt-contrib-narrative.js
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Original file line number Diff line number Diff line change
@@ -1,368 +1,12 @@
define(function(require) {

var ComponentView = require('coreViews/componentView');
var Adapt = require('coreJS/adapt');

var Narrative = ComponentView.extend({

events: {
'click .narrative-strapline-title': 'openPopup',
'click .narrative-controls': 'onNavigationClicked',
'click .narrative-indicators .narrative-progress': 'onProgressClicked'
},

preRender: function() {
this.listenTo(Adapt, 'device:changed', this.reRender, this);
this.listenTo(Adapt, 'device:resize', this.resizeControl, this);
this.listenTo(Adapt, 'notify:closed', this.closeNotify, this);
this.setDeviceSize();

// Checks to see if the narrative should be reset on revisit
this.checkIfResetOnRevisit();
},

setDeviceSize: function() {
if (Adapt.device.screenSize === 'large') {
this.$el.addClass('desktop').removeClass('mobile');
this.model.set('_isDesktop', true);
} else {
this.$el.addClass('mobile').removeClass('desktop');
this.model.set('_isDesktop', false)
}
},

postRender: function() {
this.renderState();
this.$('.narrative-slider').imageready(_.bind(function() {
this.setReadyStatus();
}, this));
this.setupNarrative();
},

// Used to check if the narrative should reset on revisit
checkIfResetOnRevisit: function() {
var isResetOnRevisit = this.model.get('_isResetOnRevisit');

// If reset is enabled set defaults
if (isResetOnRevisit) {
this.model.reset(isResetOnRevisit);
this.model.set({_stage: 0});

_.each(this.model.get('_items'), function(item) {
item._isVisited = false;
});
}
},

setupNarrative: function() {
this.setDeviceSize();
if(!this.model.has('_items') || !this.model.get('_items').length) return;
this.model.set('_marginDir', 'left');
if (Adapt.config.get('_defaultDirection') == 'rtl') {
this.model.set('_marginDir', 'right');
}
this.model.set('_itemCount', this.model.get('_items').length);

this.model.set('_active', true);

if (this.model.get('_stage')) {
this.setStage(this.model.get('_stage'), true);
} else {
this.setStage(0, true);
}
this.calculateWidths();

if (Adapt.device.screenSize !== 'large' && !this.model.get('_wasHotgraphic')) {
this.replaceInstructions();
}
this.setupEventListeners();
},

calculateWidths: function() {
var slideWidth = this.$('.narrative-slide-container').width();
var slideCount = this.model.get('_itemCount');
var marginRight = this.$('.narrative-slider-graphic').css('margin-right');
var extraMargin = marginRight === '' ? 0 : parseInt(marginRight);
var fullSlideWidth = (slideWidth + extraMargin) * slideCount;

this.$('.narrative-slider-graphic').width(slideWidth);
this.$('.narrative-strapline-header').width(slideWidth);
this.$('.narrative-strapline-title').width(slideWidth);

this.$('.narrative-slider').width(fullSlideWidth);
this.$('.narrative-strapline-header-inner').width(fullSlideWidth);

var stage = this.model.get('_stage');
var margin = -(stage * slideWidth);

this.$('.narrative-slider').css(('margin-' + this.model.get('_marginDir')), margin);
this.$('.narrative-strapline-header-inner').css(('margin-' + this.model.get('_marginDir')), margin);

this.model.set('_finalItemLeft', fullSlideWidth - slideWidth);
},

resizeControl: function() {
var wasDesktop = this.model.get('_isDesktop');
this.setDeviceSize();
var isDesktop = this.model.get('_isDesktop');
if (wasDesktop != isDesktop) this.replaceInstructions();
this.calculateWidths();
this.evaluateNavigation();

/**
* need to set current stage item to visited when moving from small/medium screen size to large
* see https://github.com/adaptlearning/adapt_framework/issues/2100
*/
if (isDesktop) this.setCurrentItemVisited();
},

setCurrentItemVisited: function() {
var stage = this.model.get('_stage') || 0;
if (this.getCurrentItem(stage)._isVisited) return;
this.setStage(stage, true);
},

reRender: function() {
if (this.model.get('_wasHotgraphic') && Adapt.device.screenSize == 'large') {
this.replaceWithHotgraphic();
} else {
this.resizeControl();
}
},

closeNotify: function() {
this.evaluateCompletion();
},

replaceInstructions: function() {
if (Adapt.device.screenSize === 'large') {
this.$('.narrative-instruction-inner').html(this.model.get('instruction')).a11y_text();
} else if (this.model.get('mobileInstruction') && !this.model.get('_wasHotgraphic')) {
this.$('.narrative-instruction-inner').html(this.model.get('mobileInstruction')).a11y_text();
}
},

replaceWithHotgraphic: function() {
var Hotgraphic = Adapt.getViewClass('hotgraphic');

var model = this.prepareHotgraphicModel();
var newHotgraphic = new Hotgraphic({ model: model });
var $container = $(".component-container", $("." + this.model.get("_parentId")));

$container.append(newHotgraphic.$el);
this.remove();
$.a11y_update();
_.defer(function() {
Adapt.trigger('device:resize');
});
},

prepareHotgraphicModel: function() {
var model = this.model;
model.set('_component', 'hotgraphic');
model.set('body', model.get('originalBody'));
model.set('instruction', model.get('originalInstruction'));
return model;
},

moveSliderToIndex: function(itemIndex, animate, callback) {
var extraMargin = parseInt(this.$('.narrative-slider-graphic').css('margin-right'));
var movementSize = this.$('.narrative-slide-container').width() + extraMargin;
var marginDir = {};
if (animate && !Adapt.config.get('_disableAnimation')) {
marginDir['margin-' + this.model.get('_marginDir')] = -(movementSize * itemIndex);
this.$('.narrative-slider').velocity("stop", true).velocity(marginDir);
this.$('.narrative-strapline-header-inner').velocity("stop", true).velocity(marginDir, {complete:callback});
} else {
marginDir['margin-' + this.model.get('_marginDir')] = -(movementSize * itemIndex);
this.$('.narrative-slider').css(marginDir);
this.$('.narrative-strapline-header-inner').css(marginDir);
callback();
}
},

setStage: function(stage, initial) {
this.model.set('_stage', stage);
if (this.model.get('_isDesktop')) {
// Set the visited attribute for large screen devices
var currentItem = this.getCurrentItem(stage);
currentItem._isVisited = true;
}

this.$('.narrative-progress:visible').removeClass('selected').eq(stage).addClass('selected');
this.$('.narrative-slider-graphic').children('.controls').a11y_cntrl_enabled(false);
this.$('.narrative-slider-graphic').eq(stage).children('.controls').a11y_cntrl_enabled(true);
this.$('.narrative-content-item').addClass('narrative-hidden').a11y_on(false).eq(stage).removeClass('narrative-hidden').a11y_on(true);
this.$('.narrative-strapline-title').a11y_cntrl_enabled(false).eq(stage).a11y_cntrl_enabled(true);

this.evaluateNavigation();
this.evaluateCompletion();

this.moveSliderToIndex(stage, !initial, _.bind(function() {
if (this.model.get('_isDesktop')) {
if (!initial) this.$('.narrative-content-item').eq(stage).a11y_focus();
} else {
if (!initial) this.$('.narrative-strapline-title').a11y_focus();
}
}, this));
},

constrainStage: function(stage) {
if (stage > this.model.get('_items').length - 1) {
stage = this.model.get('_items').length - 1;
} else if (stage < 0) {
stage = 0;
}
return stage;
},

constrainXPosition: function(previousLeft, newLeft, deltaX) {
if (newLeft > 0 && deltaX > 0) {
newLeft = previousLeft + (deltaX / (newLeft * 0.1));
}
var finalItemLeft = this.model.get('_finalItemLeft');
if (newLeft < -finalItemLeft && deltaX < 0) {
var distance = Math.abs(newLeft + finalItemLeft);
newLeft = previousLeft + (deltaX / (distance * 0.1));
}
return newLeft;
},

evaluateNavigation: function() {
var currentStage = this.model.get('_stage');
var itemCount = this.model.get('_itemCount');
if (currentStage == 0) {
this.$('.narrative-controls').addClass('narrative-hidden');

if (itemCount > 1) {
this.$('.narrative-control-right').removeClass('narrative-hidden');
}
} else {
this.$('.narrative-control-left').removeClass('narrative-hidden');

if (currentStage == itemCount - 1) {
this.$('.narrative-control-right').addClass('narrative-hidden');
} else {
this.$('.narrative-control-right').removeClass('narrative-hidden');
}
}

},

getNearestItemIndex: function() {
var currentPosition = parseInt(this.$('.narrative-slider').css('margin-left'));
var graphicWidth = this.$('.narrative-slider-graphic').width();
var absolutePosition = currentPosition / graphicWidth;
var stage = this.model.get('_stage');
var relativePosition = stage - Math.abs(absolutePosition);

if (relativePosition < -0.3) {
stage++;
} else if (relativePosition > 0.3) {
stage--;
}

return this.constrainStage(stage);
},

getCurrentItem: function(index) {
return this.model.get('_items')[index];
},

getVisitedItems: function() {
return _.filter(this.model.get('_items'), function(item) {
return item._isVisited;
});
},

evaluateCompletion: function() {
if (this.getVisitedItems().length === this.model.get('_items').length) {
this.trigger('allItems');
}
},

moveElement: function($element, deltaX) {
var previousLeft = parseInt($element.css('margin-left'));
var newLeft = previousLeft + deltaX;

newLeft = this.constrainXPosition(previousLeft, newLeft, deltaX);
$element.css(('margin-' + this.model.get('_marginDir')), newLeft + 'px');
},

openPopup: function(event) {
event.preventDefault();
var currentItem = this.getCurrentItem(this.model.get('_stage'));
var popupObject = {
title: currentItem.title,
body: currentItem.body
};

// Set the visited attribute for small and medium screen devices
currentItem._isVisited = true;

Adapt.trigger('notify:popup', popupObject);
},

onNavigationClicked: function(event) {

if (!this.model.get('_active')) return;

var stage = this.model.get('_stage');
var numberOfItems = this.model.get('_itemCount');

if ($(event.currentTarget).hasClass('narrative-control-right')) {
stage++;
} else if ($(event.currentTarget).hasClass('narrative-control-left')) {
stage--;
}
stage = (stage + numberOfItems) % numberOfItems;
this.setStage(stage);
},

onProgressClicked: function(event) {
event.preventDefault();
var clickedIndex = $(event.target).index();
this.setStage(clickedIndex);
},

inview: function(event, visible, visiblePartX, visiblePartY) {
if (visible) {
if (visiblePartY === 'top') {
this._isVisibleTop = true;
} else if (visiblePartY === 'bottom') {
this._isVisibleBottom = true;
} else {
this._isVisibleTop = true;
this._isVisibleBottom = true;
}

if (this._isVisibleTop && this._isVisibleBottom) {
this.$('.component-inner').off('inview');
this.setCompletionStatus();
}
}
},

onCompletion: function() {
this.setCompletionStatus();
if (this.completionEvent && this.completionEvent != 'inview') {
this.off(this.completionEvent, this);
}
},

setupEventListeners: function() {
this.completionEvent = (!this.model.get('_setCompletionOn')) ? 'allItems' : this.model.get('_setCompletionOn');
if (this.completionEvent !== 'inview' && this.model.get('_items').length > 1) {
this.on(this.completionEvent, _.bind(this.onCompletion, this));
} else {
this.$('.component-widget').on('inview', _.bind(this.inview, this));
}
}

define([
'core/js/adapt',
'./narrativeView',
'core/js/models/itemsComponentModel'
],function(Adapt, NarrativeView, ItemsComponentModel) {

return Adapt.register('narrative', {
model: ItemsComponentModel,
view: NarrativeView
});

Adapt.register('narrative', Narrative);

return Narrative;

});
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