quicklib.js

var $ = {
    crudify: function (store, query, crud)
    {
        if (null == crud)
        {
            crud = query;
            query = store;
            store = null;
        }
        if (store)
        {
            query = store.query(query);
        }
        query.observe(function (row, deleteIndex, insertIndex)
        {
            var del = (0 <= deleteIndex), ins = (0 <= insertIndex);
            !del && ins && crud.c && crud.c(row);
            del && ins && crud.u && crud.u(row);
            del && !ins && crud.d && crud.d(row);
        }, !!crud.u);
    },

    get : function ( item, keys )
    {
        var i, j;
        for ( i = 0, j = keys.length; i < j; i++ )
        {
            item = item[ keys[ i ] ];
            if ( undefined === item )
            {
                break;
            }
        }
        return item;
    },

    set : function ( item, keys, value )
    {
        var i, j, key;
        for ( i = 0, j = keys.length - 1; i <= j; i++ )
        {
            key = keys[ i ];
            item = item[ key ] = ( i === j ) ? value : ( item[ key ] || [] );
        }
        return value;
    },

    delay : function ( timeout, id, callback )
    {
        this.delays = this.delays || [];
        var delay = this.delays[ id ];
        if ( delay )
        {
            clearTimeout ( delay );
        }
        delay = setTimeout ( callback, timeout );
        this.delays[ id ] = delay;
    },

    range : function ( min, max )
    {
        var result = [];
        while ( min <= max )
        {
            result.push ( min++ );
        }
        return result;
    }
};

var array = {

    every: function (array, test)
    {
        for (var i = 0; i < array.length; i++)
        {
            if (!test(array[i], i, array))
                return false;
        }
        return true;
    },

    filter: function (array, test)
    {
        var result = [];
        for (var i = 0; i < array.length; i++)
        {
            test(array[i], i, array) && result.push(array[i]);
        }
        return result;
    },

    map: function (array, mapper)
    {
        var result = [];
        for (var i = 0; i < array.length; i++)
        {
            result.push(mapper(array[i], i, array));
        }
        return result;
    },

    forEach: function (array, mapper)
    {
        for (var i = 0; i < array.length; i++)
        {
            mapper(array[i], i, array);
        }
    }
};

var lang = {

    mixin: function (to, from)
    {
        for (var key in from)
        {
            if (from.hasOwnProperty(key))
            {
                to[key] = from[key];
            }
        }
        return to;
    }
};

var string = {

    substitute: function (pattern, map)
    {
        for (var key in map)
        {
            if (map.hasOwnProperty(key))
            {
                pattern = pattern.replace("${" + key + "}", map[key]);
            }
        }
        return pattern;
    }
};