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/**
* __PrimeFaces Wizard Widget__
*
* Wizard provides an AJAX enhanced UI to implement a workflow easily in a single page. Wizard consists of several child
* tab components where each tab represents a step in the process.
*
* @typedef PrimeFaces.widget.Wizard.OnBackCallback Callback that is invoked before switching to the previous wizard
* step, see also {@link WizardCfg.onback}
* @this {PrimeFaces.widget.Wizard} PrimeFaces.widget.Wizard.OnBackCallback
* @return {boolean} PrimeFaces.widget.Wizard.OnBackCallback `true` to switch to the next wizard step, `false` to stay
* at the current step.
*
* @typedef PrimeFaces.widget.Wizard.OnNextCallback Callback that is invoked before switching to the next wizard step.
* If this return `false`, stays on the current tab. See also {@link WizardCfg.onnext}.
* @this {PrimeFaces.widget.Wizard} PrimeFaces.widget.Wizard.OnNextCallback
*
* @prop {JQuery} backNav The DOM element for the button that switches back to the previous wizard step.
* @prop {JQuery} content The DOM element for the content of the wizard step.
* @prop {string} currentStep ID of the currently active wizard step tab.
* @prop {JQuery} nextNav The DOM element for the button that switches back to the next wizard step.
* @prop {JQuery} stepControls The DOM element for the container with the wizard step controls.
*
* @interface {PrimeFaces.widget.WizardCfg} cfg The configuration for the {@link Wizard| Wizard widget}.
* You can access this configuration via {@link PrimeFaces.widget.BaseWidget.cfg|BaseWidget.cfg}. Please note that this
* configuration is usually meant to be read-only and should not be modified.
* @extends {PrimeFaces.widget.BaseWidgetCfg} cfg
*
* @prop {string} cfg.initialStep ID of the wizard step tab that is shown initially.
* @prop {PrimeFaces.widget.Wizard.OnBackCallback} cfg.onback Callback that is invoked before switching to the previous
* wizard step. If this returns `false`, stays on the current tab.
* @prop {PrimeFaces.widget.Wizard.OnNextCallback} cfg.onnext Callback that is invoked before switching to the next
* wizard step. If this return `false`, stays on the current tab.
* @prop {boolean} cfg.showStepStatus Whether to display a progress indicator.
* @prop {boolean} cfg.showNavBar Whether to display a navigation bar.
* @prop {string[]} cfg.steps List of IDs of the individual wizard step tabs.
* @prop {string} cfg.effect Animation effect to use when showing and hiding wizard.
* @prop {number} cfg.effectDuration Duration of the animation effect in milliseconds.
*/
PrimeFaces.widget.Wizard = PrimeFaces.widget.BaseWidget.extend({
/**
* @override
* @inheritdoc
* @param {PrimeFaces.PartialWidgetCfg} cfg
*/
init: function(cfg) {
this._super(cfg);
this.content = $(this.jqId + '_content');
this.backNav = $(this.jqId + '_back');
this.nextNav = $(this.jqId + '_next');
this.cfg.formId = this.jq.parents('form:first').attr('id');
this.currentStep = this.cfg.initialStep;
var _self = this;
//Step controls
if(this.cfg.showStepStatus) {
this.stepControls = $(this.jqId + ' .ui-wizard-step-titles li.ui-wizard-step-title');
}
//Navigation controls
if(this.cfg.showNavBar) {
var currentStepIndex = this.getStepIndex(this.currentStep);
//visuals
PrimeFaces.skinButton(this.backNav);
PrimeFaces.skinButton(this.nextNav);
//events
this.backNav.on("click", function() {_self.back();});
this.nextNav.on("click", function() {_self.next();});
if(currentStepIndex == 0)
this.backNav.hide();
else if(currentStepIndex == this.cfg.steps.length - 1)
this.nextNav.hide();
}
},
/**
* Returns to the previous wizard step.
*/
back: function() {
var $this = this;
if(this.cfg.onback) {
var value = this.cfg.onback.call(this);
if(value === false) {
return;
}
}
var targetStepIndex = this.getStepIndex(this.currentStep) - 1;
if(targetStepIndex >= 0) {
var stepToGo = this.cfg.steps[targetStepIndex];
if (this.cfg.effect) {
this.content.hide($this.cfg.effect, {}, $this.cfg.effectDuration, function() {
$this.loadStep(stepToGo, "back");
$this.content.show($this.cfg.effect, {}, $this.cfg.effectDuration);
});
} else {
this.loadStep(stepToGo, "back");
}
}
},
/**
* Advances to the next wizard step.
*/
next: function() {
var $this = this;
if(this.cfg.onnext) {
var value = this.cfg.onnext.call(this);
if(value === false) {
return;
}
}
var targetStepIndex = this.getStepIndex(this.currentStep) + 1;
if(targetStepIndex < this.cfg.steps.length) {
var stepToGo = this.cfg.steps[targetStepIndex];
if (this.cfg.effect) {
this.content.hide($this.cfg.effect, {}, $this.cfg.effectDuration, function() {
$this.loadStep(stepToGo, "next");
$this.content.show($this.cfg.effect, {}, $this.cfg.effectDuration);
});
} else {
this.loadStep(stepToGo, "next");
}
}
},
/**
* Loads the given wizard step via AJAX, if not already loaded.
* @private
* @param {string} stepToGo ID of the wizard step tab to load.
* @param {string} event Type of event that triggered the loading, `back` or `next`.
*/
loadStep: function(stepToGo, event) {
var $this = this,
options = {
source: this.id,
process: this.id,
update: this.id,
formId: this.cfg.formId,
params: [
{name: this.id + '_direction', value: event},
{name: this.id + '_stepToGo', value: stepToGo}
],
onsuccess: function(responseXML, status, xhr) {
PrimeFaces.ajax.Response.handle(responseXML, status, xhr, {
widget: $this,
handle: function(content) {
this.content.html(content);
}
});
return true;
},
oncomplete: function(xhr, status, args, data) {
$this.currentStep = args.currentStep;
if(!args.validationFailed) {
var currentStepIndex = $this.getStepIndex($this.currentStep);
if($this.cfg.showNavBar) {
if(currentStepIndex === $this.cfg.steps.length - 1) {
$this.hideNextNav();
$this.showBackNav();
} else if(currentStepIndex === 0) {
$this.hideBackNav();
$this.showNextNav();
} else {
$this.showBackNav();
$this.showNextNav();
}
}
//update step status
if($this.cfg.showStepStatus) {
$this.stepControls.removeClass('ui-state-highlight');
$($this.stepControls.get(currentStepIndex)).addClass('ui-state-highlight');
}
}
}
};
if(this.hasBehavior(event)) {
this.callBehavior(event, options);
}
else {
PrimeFaces.ajax.Request.handle(options);
}
},
/**
* Finds the index of the given wizard step.
* @param {string} step ID of the wizard step tab to check.
* @return {number} The 0-based index of the given wizard step tab.
*/
getStepIndex: function(step) {
for(var i=0; i < this.cfg.steps.length; i++) {
if(this.cfg.steps[i] == step)
return i;
}
return -1;
},
/**
* Shows the button for navigating to the next wizard step.
*/
showNextNav: function() {
this.nextNav.fadeIn();
},
/**
* Hides the button for navigating to the next wizard step.
*/
hideNextNav: function() {
this.nextNav.fadeOut();
},
/**
* Enables the button for navigating to the next wizard step.
*/
enableNextNav: function() {
PrimeFaces.utils.enableButton(this.nextNav);
},
/**
* Disables the button for navigating to the next wizard step.
*/
disableNextNav: function() {
PrimeFaces.utils.disableButton(this.nextNav);
},
/**
* Shows the button for navigating to the previous wizard step.
*/
showBackNav: function() {
this.backNav.fadeIn();
},
/**
* Hides the button for navigating to the previous wizard step.
*/
hideBackNav: function() {
this.backNav.fadeOut();
},
/**
* Enables the button for navigating to the previous wizard step.
*/
enableBackNav: function() {
PrimeFaces.utils.enableButton(this.backNav);
},
/**
* Disables the button for navigating to the previous wizard step.
*/
disableBackNav: function() {
PrimeFaces.utils.disableButton(this.backNav);
}
});
