meteor-package-elements/dataTextarea.js at master · tomdurrent/meteor-package-elements · GitHub

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/**
Template Controllers

@module Templates
*/

/**
The data textarea template.

@class [template] dapp_dataTextarea
@constructor
*/

Template['dapp_dataTextarea'].onCreated(function(){

    // default set to true, to show no error
    TemplateVar.set('isValid', true);

    if(this.data && this.data.value) {
        TemplateVar.set('value', this.data.value);
    }
});

Template['dapp_dataTextarea'].onRendered(function(){
    if(this.data && this.data.value) {
        this.$('textarea').trigger('change');
    }
});

Template['dapp_dataTextarea'].helpers({
    /**
    Return the autofocus or disabled attribute.

    @method (additionalAttributes)
    */
    'additionalAttributes': function(){
        var attr = {};

        if(this.autofocus)
            attr.autofocus = true;
        if(this.disabled)
            attr.disabled = true;

        return attr;
    }
});


Template['dapp_dataTextarea'].events({
    /**
    Set the value while typing

    @event input textarea, change textarea
    */
    'input textarea, change textarea': function(e, template){
        var value = e.currentTarget.value.replace(/\s+/g, '');

        // remove multiline
        if(value.indexOf("\n") !== -1) {
            value = value.replace("\n", '');
            e.currentTarget.value = value;
        }

        // add 0x
        if(value.length > 2 && value.indexOf('0x') === -1) {
            value = '0x'+ value;
            e.currentTarget.value = value;
        }

        if(/^(0x)?[a-f0-9]*$/i.test(value) || _.isEmpty(value)) {
            TemplateVar.set('isValid', true);
            if(!_.isEmpty(value))
                TemplateVar.set('value', '0x'+ value.replace('0x',''));
            else
                TemplateVar.set('value', undefined);
        } else {
            TemplateVar.set('isValid', false);
            TemplateVar.set('value', undefined);
        }
    }
});