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dodo.js

(function(g,undefined){
    //内部私有方法
    function findControl(labelText, form){
        var labels = document.getElementsByTagName("Label");
        for(var i=0,l=labels.length; i<l; i++){
            var label = labels[i];
            var text = label.innerText;
            if(text.trim() == labelText){
                var labelFor = label.getAttribute("for");
                if(labelFor){
                    var control = document.getElementById(labelFor);
                    if(control){
                        return control;
                    }else{
                        var controls = document.getElementsByName(labelFor);
                        return Array.prototype.slice.call(controls, 0);
                    }
                }
            }
        }
    }


    function show(element){
        element.style.display = "auto";
    }

    function hide(element){
        element.style.display = "none";
    }

    function disable(element){
        element.disabled = true;
    }

    function enable(element){
        element.disabled = false;
    }

    var _alias = {};
    function alias(element, name){
        _alias.name = element;
    }

    function clearAlias(name){
        delete _alias.name;
    }

    function _isArray(o){
        return Array.prototype.isPrototypeOf(o);
    }

    function _toArray(o){
        return Array.prototype.slice.call(o, 0);
    }

    function getValueByLabel(labelText){
        var control = findControl(labelText);
        if(_isArray(control)){
            var controls = control;
            var values = [];
            for(var i=0,l=controls.length; i<l; i++){
                values.push(controls[i].value);
            }
            return values;
        }else{
            return control.value;
        }
    }

    function getValueByName(name){
        var controls = document.getElementsByName(name);
        if(controls.length>0){
            var type = controls[0].type;
            if(type === "radio"){
                for(var i=0,l=controls.length; i<l; i++){
                    var aRadio = controls[i];
                    if(aRadio.checked){
                        return aRadio.value;
                    }
                }
            }else if(type === "checkbox"){
                var values = [];
                for(var i=0,l=controls.length; i<l; i++){
                    var aCheckbox = controls[i];
                    if(aCheckbox.checked){
                        values.push(aCheckbox.value);
                    }
                }
                return values;
            }else{
                return controls[0].value;
            }
        }
    }


    var Fn = function(){};

    Fn.prototype.submit = function(FirstLegendText){
        var legends = document.getElementsByTagName("Legend");
        for(var i=0,l=legends.length; i<l; i++){
            if(legends[i].innerText.trim() === FirstLegendText){
                return legends[i].form.submit();
            }
        }
    }

    Fn.prototype.findControlLabel = function(controlId){
        var labels = document.getElementsByTagName("Label");
        for(var i=0,l=labels.length; i<l; i++){
            var aLabel = labels[i];
            if(aLabel.getAttribute("for") === controlId){
                return aLabel.innerText;
            }
        }
    }

    Fn.prototype.getChoosedOf = function(labelText){
        var radios = findControl(labelText);
        for(var i=0,l=radios.length; i<l; i++){
            var aRadio = radios[i];
            if(aRadio.checked){
                return findControlLabel(aRadio.id);
            }
        }
    }

    Fn.prototype.getSelectedOf = function(labelText){
        var select = findControl(labelText);
        if(select){
            var options = select.options;
            if(select.multiple){
                var selected = [];
                for(var i=0,l=options.length; i<l; i++){
                    var aOption = options[i];
                    if(aOption.selected){
                        selected.push(Option.text);
                    }
                }
                return selected;
            }else{
                for(var i=0,l=options.length; i<l; i++){
                    var aOption = options[i];
                    if(aOption.selected){
                        return aOption.text;
                    }
                }
            }
        }
    }

    Fn.prototype.getCheckedOf = function(labelText){
        var checkboxes = findControl(labelText);
        var checked = [];
        for(var i=0,l=checkboxes.length; i<l; i++){
            var aCheckbox = checkboxes[i];
            if(aCheckbox.checked){
                checked.push(findControlLabel(aCheckbox.id));
            }
        }
        return checked;
    }

    Fn.prototype.clearChecked = function(controlsLabel){
        _toArray(findControl(controlsLabel)).forEach(function(checkbox){
            checkbox.checked = false;
        });
    }

    Fn.prototype.select = function(controlLabel, selectOptions){
        if(!_isArray(selectOptions)){
            selectOptions=[selectOptions];
        }

        var aField = findControl(controlLabel);
        if(aField){
            var ableOptions = aField.options;
            selectOptions.forEach(function(selectOption){
                for(var i=0,l=ableOptions.length; i<l; i++){
                    var option = ableOptions[i];
                    if(option.text == selectOption){
                        option.selected = true;
                        break;
                    }
                }
            });
        }
    }

    Fn.prototype.fillIn = function(controlLabel, text){
        var aField = findControl(controlLabel);
        if(aField){
            aField.value = text;
        }
    }

    Fn.prototype.choose = function(controlLabel){
        var aField = findControl(controlLabel);
        if(aField){
            aField.checked = true;
        }
    }

    Fn.prototype.check = function(controlLabel){
        if(arguments.length > 1){
            var controlLabels = Array.prototype.slice.call(arguments, 0);
            controlLabels.forEach(function(item){
                check(item);
            });
        }else{
            var aField = findControl(controlLabel);
            if(aField){
                aField.checked = true;
            }
        }
    }

    Fn.prototype.uncheck = function(controlLabel){
        if(arguments.length > 1){
            var controlLabels = Array.prototype.slice.call(arguments, 0);
            controlLabels.forEach(function(item){
                uncheck(item);
            });
        }else{
            var aField = findControl(controlLabel);
            if(aField){
                aField.checked = false;
            }
        }
    }


    window.dodo = window.dodo || new Fn();
})(global || window);