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Contents
/**
* Text based input view that can display a placeholder.
*
* @param {string|function} [options.placeholder]
* Display a placeholder string if the input is blank. Either a
* string or a function taking the model as a first parameter and
* returning a string.
*
* @param {string} [options.placeholderBinding]
* Name of an attribute. Recompute the placeholder function whenever
* this attribute changes.
*
* @param {boolean} [options.hidePlaceholderIfDisabled]
* Do not display the placeholder if the input is disabled.
*
* @param {Backbone.Model} [options.placeholderModel]
* Obtain placeholder by looking up the configured `propertyName`
* inside a given model.
*
* @mixin
* @memberof module:pageflow/ui
*/
pageflow.inputWithPlaceholderText = {
onRender: function() {
this.updatePlaceholder();
if (this.options.placeholderBinding) {
this.listenTo(this.model,
'change:' + this.options.placeholderBinding,
this.updatePlaceholder);
}
},
updatePlaceholder: function() {
this.ui.input.attr('placeholder', this.placeholderText());
},
placeholderText: function() {
if (!this.options.disabled || !this.options.hidePlaceholderIfDisabled) {
if (this.options.placeholder) {
if (typeof this.options.placeholder == 'function') {
return this.options.placeholder(this.model);
}
else {
return this.options.placeholder;
}
}
else {
return this.placeholderModelValue();
}
}
},
placeholderModelValue: function() {
return this.options.placeholderModel &&
this.options.placeholderModel.get(this.options.propertyName);
}
};
Version data entries
46 entries across 46 versions & 1 rubygems