/* Copyright 2010 Google Inc.

 * 

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 * 

 *      http://www.apache.org/licenses/LICENSE-2.0

 * 

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS.

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License

 */



/**

 * Library for ideaexchange js Tag cloud

 * 

 * @author Abhishek

 */

ie.TagCloud = {

    /** @Private */

    maxSize : 10,

    /** @Private */

    miSize : 1,

    /** @Private */

    maxWeight : 10,

    /** @Private */

    minWeight : 1

};



/**

 * prepare tag cloud

 */

ie.TagCloud.render = function(jsonData, weights, directive, options) {

    if (undefined != weights.maxWeight) {

        this.maxWeight = weights.maxWeight;

    }

    if (undefined != weights.minWeight) {

        this.minWeight = weights.minWeight;

    }

    // ((M-m)/100)*p + m

    // TODO: Abhishek, Need to do in exponential series which will work better

    var outpuTagCloudHtml = '';

    if (0 < jsonData.length) {

        // calculate maxWeight and minWeight for tags



        for ( var i in jsonData) {

            var actualSize = Math.ceil(((jsonData[i][directive['weightage']]/this.maxWeight)*100)/10);

            outpuTagCloudHtml += '<a href="';

            outpuTagCloudHtml += options.url + jsonData[i][directive['title']];

            outpuTagCloudHtml += '" class="' + directive['css']

                    + actualSize + '">';

            outpuTagCloudHtml += jsonData[i][directive['title']];

            outpuTagCloudHtml += '(' + jsonData[i][directive['weightage']] + ')</a> ';

        }

    } else {

        // return blank string as no need to generate html

        // TODO: Abhishek, Need to define message

    }

    return outpuTagCloudHtml;

}