/* 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

 */



google.setOnLoadCallback(function() {

    ie.progressStart();

    

    $('#tagKeyword').focus(function () {

        if($('#tagKeyword').val() == 'Search Tag') {

            $('#tagKeyword').val('');

        }

    });

    $('#tagKeyword').blur(function () {

        if($('#tagKeyword').val() == '') {

            $('#tagKeyword').val('Search Tag');

        }

    });

    $('#searchTag').click(function(){

        if('' == $.trim($('#tagKeyword').val()) || 'Search Tag' == $.trim($('#tagKeyword').val())) {

            alert('Please provide search keyword.');

            return false;

        }

        var elem = $('.page_sel');

        elem.removeClass('page_sel');

        elem.addClass('page_no');

        tagList.setListType('search');

        loadTags($('#tagKeyword').val());

    });

    // initialize history

    $.historyInit(loadTags, "tag-list");

    // start with char A

    var isFirstElem = true;

    $('.page_no').each(function() {

        // url with [A-Z]1, 

        $(this).attr('href', '#'+$(this).html());

        // so that we can easily handle browser back

        $(this).attr('id', 'tag-'+$(this).html());

        // override click

        $(this).click(function(){

            // for history management

            var hash = this.href;

            hash = hash.replace(/^.*#/, '');

            // moves to a new page. 

            // pageload is called at once. 

            // hash don't contain "#", "?"

            tagList.setListType('list');

            $.historyLoad(hash);

            return false;

        });

        // need to load first elements tag

        if(isFirstElem) {

            $(this).removeClass('page_no');

            $(this).addClass('page_sel');

            isFirstElem = false;

            loadTags($(this).html());

        }

    });

});



var tagList = {};

tagList.setListType = function(listType) {

    this.type = listType;

}

tagList.getListType = function() {

    if(undefined == this.type)

        return 'list';

    return this.type;

}

function loadTags(keyword) {

    var url = '';

    if(tagList.getListType() == 'list') {

        url = ie.buildUrl(ie.config.REQUEST_IDEA_EXCHANGE, 'tags/list/'+ keyword + '.json');

        if(undefined == keyword || '' == keyword) {

            initial = 'A';

        }

        selectLink(keyword);

    }

    else {

        url = ie.buildUrl(ie.config.REQUEST_IDEA_EXCHANGE, 'tags/search?keyword='+ keyword);

    }

    $.get(

            url, 

            {}, 

            function (handle) {

                // render most recent idea

                if(ie.config.SUCCESS == handle.viewStatus.status) {

                    // TODO: Abhishek, Need to handle with Template :)

                    if(tagList.getListType() == 'search') {

                        var html = ie.TagCloud.render(

                                handle.viewStatus.data.tags, 

                                {"maxWeight":10,"minWeight":10}, 

                                {title : 'title', weightage : 'weightage', css: 'tag'},

                                {url:ie.buildUrl(ie.config.REQUEST_IDEA_EXCHANGE, 'ideas/list?type=tag&tag=')}

                            );

                    }

                    else {

                        var html = ie.TagCloud.render(

                            handle.viewStatus.data.tags, 

                            handle.viewStatus.data.weights, 

                            {title : 'title', weightage : 'weightage', css: 'tag'},

                            {url:ie.buildUrl(ie.config.REQUEST_IDEA_EXCHANGE, 'ideas/list?type=tag&tag=')}

                        );

                    }

                    $('#cloud-main').html(html);

                    ie.progressEnd();

                }

                else if(ie.config.ERROR == handle.viewStatus.status) {

                    $('#cloud-main').html(handle.viewStatus.messages.tags);

                    ie.progressEnd();

                }

                else {

                    ie.progressEnd();

                    ie.globalError();

                }

            }, 

            ie.config.RESPONSE_TYPE

    );

}



function selectLink(initial) {

    var selectedElem = $('.page_sel');

    $(selectedElem).removeClass('page_sel');

    $(selectedElem).addClass('page_no');

    $('#tag-' + initial).removeClass('page_no');

    $('#tag-' + initial).addClass('page_sel');

}