source: Dev/trunk/src/client/dijit/form/RangeBoundTextBox.js

define([
        "dojo/_base/declare", // declare
        "dojo/i18n", // i18n.getLocalization
        "./MappedTextBox"
], function(declare, i18n, MappedTextBox){

        // module:
        //              dijit/form/RangeBoundTextBox


        var RangeBoundTextBox = declare("dijit.form.RangeBoundTextBox", MappedTextBox, {
                // summary:
                //              Base class for textbox form widgets which defines a range of valid values.

                // rangeMessage: String
                //              The message to display if value is out-of-range
                rangeMessage: "",

                /*=====
                // constraints: RangeBoundTextBox.__Constraints
                constraints: {},
                ======*/

                rangeCheck: function(/*Number*/ primitive, /*dijit/form/RangeBoundTextBox.__Constraints*/ constraints){
                        // summary:
                        //              Overridable function used to validate the range of the numeric input value.
                        // tags:
                        //              protected
                        return  ("min" in constraints? (this.compare(primitive,constraints.min) >= 0) : true) &&
                                ("max" in constraints? (this.compare(primitive,constraints.max) <= 0) : true); // Boolean
                },

                isInRange: function(/*Boolean*/ /*===== isFocused =====*/){
                        // summary:
                        //              Tests if the value is in the min/max range specified in constraints
                        // tags:
                        //              protected
                        return this.rangeCheck(this.get('value'), this.constraints);
                },

                _isDefinitelyOutOfRange: function(){
                        // summary:
                        //              Returns true if the value is out of range and will remain
                        //              out of range even if the user types more characters
                        var val = this.get('value');
                        if(val == null){ return false; } // not yet valid enough to compare to
                        var outOfRange = false;
                        if("min" in this.constraints){
                                var min = this.constraints.min;
                                outOfRange = this.compare(val, ((typeof min == "number") && min >= 0 && val != 0) ? 0 : min) < 0;
                        }
                        if(!outOfRange && ("max" in this.constraints)){
                                var max = this.constraints.max;
                                outOfRange = this.compare(val, ((typeof max != "number") || max > 0) ? max : 0) > 0;
                        }
                        return outOfRange;
                },

                _isValidSubset: function(){
                        // summary:
                        //              Overrides `dijit/form/ValidationTextBox._isValidSubset()`.
                        //              Returns true if the input is syntactically valid, and either within
                        //              range or could be made in range by more typing.
                        return this.inherited(arguments) && !this._isDefinitelyOutOfRange();
                },

                isValid: function(/*Boolean*/ isFocused){
                        // Overrides dijit/form/ValidationTextBox.isValid() to check that the value is also in range.
                        return this.inherited(arguments) &&
                                ((this._isEmpty(this.textbox.value) && !this.required) || this.isInRange(isFocused)); // Boolean
                },

                getErrorMessage: function(/*Boolean*/ isFocused){
                        // Overrides dijit/form/ValidationTextBox.getErrorMessage() to print "out of range" message if appropriate
                        var v = this.get('value');
                        if(v != null /* and !undefined */ && v !== '' && (typeof v != "number" || !isNaN(v)) && !this.isInRange(isFocused)){ // don't check isInRange w/o a real value
                                return this.rangeMessage; // String
                        }
                        return this.inherited(arguments);
                },

                postMixInProperties: function(){
                        this.inherited(arguments);
                        if(!this.rangeMessage){
                                this.messages = i18n.getLocalization("dijit.form", "validate", this.lang);
                                this.rangeMessage = this.messages.rangeMessage;
                        }
                }
        });
        /*=====
        RangeBoundTextBox.__Constraints = declare(null, {
                // min: Number
                //              Minimum signed value.  Default is -Infinity
                // max: Number
                //              Maximum signed value.  Default is +Infinity
        });
        =====*/
        return RangeBoundTextBox;
});