convert/front/static/document.js

/* ================================================================================
 * document.js v1.0
 * http://git.shemic.com/dever/script
 * ================================================================================
 * Copyright 2017-2018 Dever(dever.cc)
 *
 * 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.
 * ================================================================================
 */

//文档工具包
var Document = 
{
    option : {},
    reader : '#document',
    show : 1,
    page : 0,
    width : 0,
    left : 0,
    zoom : 18,
    path : '',
    loadNum : 0,
    Init : function(option)
    {
        var self = this;
        this.loadNum = 0;

        $(window).load(function()
        {
            var callback = function() {
                var cb = function() {
                    var index = layer.load(0, {shade: false});
                    self.Onload(index);
                }
                if (typeof(layer) != 'object') {
                    self.Script('layer/layer', cb);
                } else {
                    cb();
                }
            }
            if (typeof($) != 'object') {
                self.Script('jquery', callback);
            } else {
                callback();
            }
        });
    }

    ,Script : function(name, callback)
    {
        var self = this;
        if (!self.path) {
            $('script').each(function()
            {
                if ($(this).attr('src') && $(this).attr('src').indexOf('document.js') != -1) {
                    path = $(this).attr('src').split('document.js');
                    self.path = path[0];
                }
            });
        }
        var script = document.createElement("script");
        script.type = "text/javascript";
        script.async = 'async';
        script.src = self.path + name + ".js";
        document.getElementsByTagName('head')[0].appendChild(script);
        if (script.readyState) {
            script.onreadystatechange=function() {
                if (script.readyState == 'complete'|| script.readyState == 'loaded') {
                    script.onreadystatechange = null;
                    callback();
                }
            }
        } else {
            script.onload = function(){callback();}
        }
    }

    ,Css : function(name, callback)
    {
        var self = this;
        var link = document.createElement("link");
        link.rel = 'stylesheet';
        link.type = 'text/css';
        link.href = name;
        document.getElementsByTagName('head')[0].appendChild(link);
        if (link.readyState) {
            link.onreadystatechange=function() {
                if (link.readyState == 'complete' || link.readyState == 'loaded') {
                    link.onreadystatechange = null;
                    callback();
                }
            }
        } else {
            link.onload = function(){callback();}
        }
    }

    ,Sleep : function(n)
    {
        var start = new Date().getTime();
        while (true) if (new Date().getTime() - start > n) break;
    }

    ,Onload : function(index)
    {
        var self = this;
        self.Option(option);
        
        $.getJSON(self.option.document + '&callback=?', function(t)
        {
            $(self.option.reader).html(t.msg);
            var css = $('#page-container').attr('load-css');
            var callback = function()
            {
                layer.close(index);

                self.width = $(self.option.reader).width();
                if (self.option.tool) {
                    self.Tool();
                }

                self.Border();
                self.Scroll();

                $('.demeter_document').each(function(i)
                {
                    if (i < self.show) {
                        self.Load(i);
                    }
                });
            };
            callback();
            //self.Css(css, callback);
        });
    }

    ,Load : function(i)
    {
        var self = this;
        self.page = i;
        var doc = $('.demeter_document').eq(i);
        doc.hide();
        var url = doc.attr('data-page-url');
        var parent = doc.parent();
        var index = layer.load(0, {shade: false});
        $.getJSON(url + '&callback=?', function(t)
        {
            doc.html(t.msg);
            self.LoadDoc(i,index,doc);
        });
    }

    ,LoadDoc : function(i, index, doc)
    {
        var html = doc.html();
        if (doc.find('.pc').length) {
            this.SetOffset(i,index,doc);
        } else {
            if (this.loadNum > 5) {
                this.loadNum = 1;
                layer.close(index);
            } else {
                this.loadNum = this.loadNum + 1;
                this.LoadDoc(i,index,doc); 
            }
        }
    }

    ,SetOffset : function(i,index,doc)
    {
        var self = this;
        var e = $('.pf');
        var c = e.find('.pc');
        var w = c.width();
        var b = w/self.width;
        if (self.left) {
            c = c.children().eq(0);
            e = c.children().eq(0);
            if (!e.length) {
                e = c;
            }
            var left = parseInt(e.css('left'));
            if (left <= 0) {
                self.left = 0;
            } else {
                var e = c.children().eq(3);
                if (e.length) {
                    var left = parseInt(e.css('left'));
                }
            }
            
            self.left = left * -1 + 10;
            self.zoom = 2;
            if (self.left > 20) {
                $(self.option.reader).css('margin-left', self.left);
                self.zoom = 18;
            }

            if (w - self.width > 10) {
                var z = 100/b + self.zoom;
                $(self.option.reader).css('zoom', z + '%');
            }
            
            self.width = w;
        } else {
            var z = 100/b;
            $(self.option.reader).css('zoom', z + '%');
        }
        doc.show();
        layer.close(index);
    }

    ,Option : function(option)
    {
        this.option = option;
        if (!this.option.border) {
            this.option.border = 'yes';
        }

        if (this.option.reader) {
            this.reader = this.option.reader;
        }

        if (this.option.show) {
            this.show = this.option.show;
        }

        if (this.option.left) {
            this.left = this.option.left;
        }

        if (this.option.zoom) {
            this.zoom = this.option.zoom;
        }
    }

    ,Border : function() {
        if (this.option.border == 'no') {
            $(this.option.reader).find('style').append('<style>.pf{border:0px;width:100%;}</style>');
        }
    }

    ,Tool : function()
    {
        var html = '<div class="document-toolsbar-mod" style="visibility: visible;width: 98.2%; position: static;margin-top: 10px;margin-left: 8px;margin-bottom: -14px;"><div class="document-toolsbar-inner"><div class="document-toolsbar-content"><div class="document-toolsbar-nav" style="margin-left: 230px;"><a class="document-toolsbar-top" href="###" style="visibility: visible;"><b>top</b></a><input class="document-toolsbar-input" type="text" value="" style="visibility: visible;"><span class="document-toolsbar-pageCount" style="visibility: visible;">&nbsp;/&nbsp;3</span><a class="document-toolsbar-bottom" href="###" style="visibility: visible;"><b>bottom</b></a></div><div class="document-toolsbar-zoom"><a class="document-toolsbar-zoomin" href="###" style="visibility: visible;">zoom in</a><a class="document-toolsbar-zoomout" href="###" style="visibility: visible;">zoom out</a></div></div></div></div></div>';
        $('#page-container').prepend(html);
        this.Scoll();
    }

    ,Scroll : function()
    {
        var self = this;
        var total = $('.demeter_document').length;

        if (self.option.more) {

            if (self.page > total) {
                $(self.option.more).hide();
            } else {
                $(self.option.more).show();
                $(self.option.more).click(function()
                {
                    var p = self.page;
                    for (var i = 1; i <= self.show; i++) {
                        var page = p + i;
                        var state = self.MorePage(total-1, page);
                        if (state) {
                            self.Load(page);
                        }
                    }
                });
                self.MorePage(total, self.show);
            }
        } else {
            $(window).scroll(function(){
                var scroll = $(window).scrollTop();
                var height = self.Height();
                if (scroll >= height && self.page < total) {
                    var page = self.page + 1;
                    self.Load(page);
                }
            });
        }
    }

    ,MorePage : function(total, page)
    {
        var num = total-page;
        if (num <= 0) {
            $(this.option.more).hide();
            return false;
        }
        $(this.option.more + '_page').html(num);
        return true;
    }

    ,Height : function()
    {
        var height = 0;
        for (var i = 0; i < this.page; i++) {
            height += $('.demeter_document').eq(i).height();
        }
        return height;
    }
};