bkb-admin-web/public/UEditor/dialogs/background/background.js

(function () {
  var onlineImage,
    backupStyle = editor.queryCommandValue('background');

  window.onload = function () {
    initTabs();
    initColorSelector();
  };

  /* 初始化tab标签 */
  function initTabs() {
    var tabs = $G('tabHeads').children;
    for (var i = 0; i < tabs.length; i++) {
      domUtils.on(tabs[i], 'click', function (e) {
        var target = e.target || e.srcElement;
        for (var j = 0; j < tabs.length; j++) {
          if (tabs[j] == target) {
            tabs[j].className = 'focus';
            var contentId = tabs[j].getAttribute('data-content-id');
            $G(contentId).style.display = 'block';
            if (contentId == 'imgManager') {
              initImagePanel();
            }
          } else {
            tabs[j].className = '';
            $G(tabs[j].getAttribute('data-content-id')).style.display = 'none';
          }
        }
      });
    }
  }

  /* 初始化颜色设置 */
  function initColorSelector() {
    var obj = editor.queryCommandValue('background');
    if (obj) {
      var color = obj['background-color'],
        repeat = obj['background-repeat'] || 'repeat',
        image = obj['background-image'] || '',
        position = obj['background-position'] || 'center center',
        pos = position.split(' '),
        x = parseInt(pos[0]) || 0,
        y = parseInt(pos[1]) || 0;

      if (repeat == 'no-repeat' && (x || y)) repeat = 'self';

      image = image.match(/url[\s]*\(([^\)]*)\)/);
      image = image ? image[1] : '';
      updateFormState('colored', color, image, repeat, x, y);
    } else {
      updateFormState();
    }

    var updateHandler = function () {
      updateFormState();
      updateBackground();
    };
    domUtils.on($G('nocolorRadio'), 'click', updateBackground);
    domUtils.on($G('coloredRadio'), 'click', updateHandler);
    domUtils.on($G('url'), 'keyup', function () {
      if ($G('url').value && $G('alignment').style.display == 'none') {
        utils.each($G('repeatType').children, function (item) {
          item.selected = 'repeat' == item.getAttribute('value') ? 'selected' : false;
        });
      }
      updateHandler();
    });
    domUtils.on($G('repeatType'), 'change', updateHandler);
    domUtils.on($G('x'), 'keyup', updateBackground);
    domUtils.on($G('y'), 'keyup', updateBackground);

    initColorPicker();
  }

  /* 初始化颜色选择器 */
  function initColorPicker() {
    var me = editor,
      cp = $G('colorPicker');

    /* 生成颜色选择器ui对象 */
    var popup = new UE.ui.Popup({
      content: new UE.ui.ColorPicker({
        noColorText: me.getLang('clearColor'),
        editor: me,
        onpickcolor: function (t, color) {
          updateFormState('colored', color);
          updateBackground();
          UE.ui.Popup.postHide();
        },
        onpicknocolor: function (t, color) {
          updateFormState('colored', 'transparent');
          updateBackground();
          UE.ui.Popup.postHide();
        },
      }),
      editor: me,
      onhide: function () {},
    });

    /* 设置颜色选择器 */
    domUtils.on(cp, 'click', function () {
      popup.showAnchor(this);
    });
    domUtils.on(document, 'mousedown', function (evt) {
      var el = evt.target || evt.srcElement;
      UE.ui.Popup.postHide(el);
    });
    domUtils.on(window, 'scroll', function () {
      UE.ui.Popup.postHide();
    });
  }

  /* 初始化在线图片列表 */
  function initImagePanel() {
    onlineImage = onlineImage || new OnlineImage('imageList');
  }

  /* 更新背景色设置面板 */
  function updateFormState(radio, color, url, align, x, y) {
    var nocolorRadio = $G('nocolorRadio'),
      coloredRadio = $G('coloredRadio');

    if (radio) {
      nocolorRadio.checked = radio == 'colored' ? false : 'checked';
      coloredRadio.checked = radio == 'colored' ? 'checked' : false;
    }
    if (color) {
      domUtils.setStyle($G('colorPicker'), 'background-color', color);
    }

    if (url && /^\//.test(url)) {
      var a = document.createElement('a');
      a.href = url;
      browser.ie && (a.href = a.href);
      url = browser.ie ? a.href : a.protocol + '//' + a.host + a.pathname + a.search + a.hash;
    }

    if (url || url === '') {
      $G('url').value = url;
    }
    if (align) {
      utils.each($G('repeatType').children, function (item) {
        item.selected = align == item.getAttribute('value') ? 'selected' : false;
      });
    }
    if (x || y) {
      $G('x').value = parseInt(x) || 0;
      $G('y').value = parseInt(y) || 0;
    }

    $G('alignment').style.display = coloredRadio.checked && $G('url').value ? '' : 'none';
    $G('custom').style.display =
      coloredRadio.checked && $G('url').value && $G('repeatType').value == 'self' ? '' : 'none';
  }

  /* 更新背景颜色 */
  function updateBackground() {
    if ($G('coloredRadio').checked) {
      var color = domUtils.getStyle($G('colorPicker'), 'background-color'),
        bgimg = $G('url').value,
        align = $G('repeatType').value,
        backgroundObj = {
          'background-repeat': 'no-repeat',
          'background-position': 'center center',
        };

      if (color) backgroundObj['background-color'] = color;
      if (bgimg) backgroundObj['background-image'] = 'url(' + bgimg + ')';
      if (align == 'self') {
        backgroundObj['background-position'] = $G('x').value + 'px ' + $G('y').value + 'px';
      } else if (align == 'repeat-x' || align == 'repeat-y' || align == 'repeat') {
        backgroundObj['background-repeat'] = align;
      }

      editor.execCommand('background', backgroundObj);
    } else {
      editor.execCommand('background', null);
    }
  }

  /* 在线图片 */
  function OnlineImage(target) {
    this.container = utils.isString(target) ? document.getElementById(target) : target;
    this.init();
  }
  OnlineImage.prototype = {
    init: function () {
      this.reset();
      this.initEvents();
    },
    /* 初始化容器 */
    initContainer: function () {
      this.container.innerHTML = '';
      this.list = document.createElement('ul');
      this.clearFloat = document.createElement('li');

      domUtils.addClass(this.list, 'list');
      domUtils.addClass(this.clearFloat, 'clearFloat');

      this.list.id = 'imageListUl';
      this.list.appendChild(this.clearFloat);
      this.container.appendChild(this.list);
    },
    /* 初始化滚动事件,滚动到地步自动拉取数据 */
    initEvents: function () {
      var _this = this;

      /* 滚动拉取图片 */
      domUtils.on($G('imageList'), 'scroll', function (e) {
        var panel = this;
        if (panel.scrollHeight - (panel.offsetHeight + panel.scrollTop) < 10) {
          _this.getImageData();
        }
      });
      /* 选中图片 */
      domUtils.on(this.container, 'click', function (e) {
        var target = e.target || e.srcElement,
          li = target.parentNode,
          nodes = $G('imageListUl').childNodes;

        if (li.tagName.toLowerCase() == 'li') {
          updateFormState('nocolor', null, '');
          for (var i = 0, node; (node = nodes[i++]); ) {
            if (node == li && !domUtils.hasClass(node, 'selected')) {
              domUtils.addClass(node, 'selected');
              updateFormState('colored', null, li.firstChild.getAttribute('_src'), 'repeat');
            } else {
              domUtils.removeClasses(node, 'selected');
            }
          }
          updateBackground();
        }
      });
    },
    /* 初始化第一次的数据 */
    initData: function () {
      /* 拉取数据需要使用的值 */
      this.state = 0;
      this.listSize = editor.getOpt('imageManagerListSize');
      this.listIndex = 0;
      this.listEnd = false;

      /* 第一次拉取数据 */
      this.getImageData();
    },
    /* 重置界面 */
    reset: function () {
      this.initContainer();
      this.initData();
    },
    /* 向后台拉取图片列表数据 */
    getImageData: function () {
      var _this = this;

      if (!_this.listEnd && !this.isLoadingData) {
        this.isLoadingData = true;
        var url = editor.getActionUrl(editor.getOpt('imageManagerActionName')),
          isJsonp = utils.isCrossDomainUrl(url);
        ajax.request(url, {
          timeout: 100000,
          dataType: isJsonp ? 'jsonp' : '',
          data: utils.extend(
            {
              start: this.listIndex,
              size: this.listSize,
            },
            editor.queryCommandValue('serverparam'),
          ),
          method: 'get',
          onsuccess: function (r) {
            try {
              var json = isJsonp ? r : eval('(' + r.responseText + ')');
              if (json.state == 'SUCCESS') {
                _this.pushData(json.list);
                _this.listIndex = parseInt(json.start) + parseInt(json.list.length);
                if (_this.listIndex >= json.total) {
                  _this.listEnd = true;
                }
                _this.isLoadingData = false;
              }
            } catch (e) {
              if (r.responseText.indexOf('ue_separate_ue') != -1) {
                var list = r.responseText.split(r.responseText);
                _this.pushData(list);
                _this.listIndex = parseInt(list.length);
                _this.listEnd = true;
                _this.isLoadingData = false;
              }
            }
          },
          onerror: function () {
            _this.isLoadingData = false;
          },
        });
      }
    },
    /* 添加图片到列表界面上 */
    pushData: function (list) {
      var i,
        item,
        img,
        icon,
        _this = this,
        urlPrefix = editor.getOpt('imageManagerUrlPrefix');
      for (i = 0; i < list.length; i++) {
        if (list[i] && list[i].url) {
          item = document.createElement('li');
          img = document.createElement('img');
          icon = document.createElement('span');

          domUtils.on(
            img,
            'load',
            (function (image) {
              return function () {
                _this.scale(image, image.parentNode.offsetWidth, image.parentNode.offsetHeight);
              };
            })(img),
          );
          img.width = 113;
          img.setAttribute(
            'src',
            urlPrefix +
              list[i].url +
              (list[i].url.indexOf('?') == -1 ? '?noCache=' : '&noCache=') +
              (+new Date()).toString(36),
          );
          img.setAttribute('_src', urlPrefix + list[i].url);
          domUtils.addClass(icon, 'icon');

          item.appendChild(img);
          item.appendChild(icon);
          this.list.insertBefore(item, this.clearFloat);
        }
      }
    },
    /* 改变图片大小 */
    scale: function (img, w, h, type) {
      var ow = img.width,
        oh = img.height;

      if (type == 'justify') {
        if (ow >= oh) {
          img.width = w;
          img.height = (h * oh) / ow;
          img.style.marginLeft = '-' + parseInt((img.width - w) / 2) + 'px';
        } else {
          img.width = (w * ow) / oh;
          img.height = h;
          img.style.marginTop = '-' + parseInt((img.height - h) / 2) + 'px';
        }
      } else {
        if (ow >= oh) {
          img.width = (w * ow) / oh;
          img.height = h;
          img.style.marginLeft = '-' + parseInt((img.width - w) / 2) + 'px';
        } else {
          img.width = w;
          img.height = (h * oh) / ow;
          img.style.marginTop = '-' + parseInt((img.height - h) / 2) + 'px';
        }
      }
    },
    getInsertList: function () {
      var i,
        lis = this.list.children,
        list = [],
        align = getAlign();
      for (i = 0; i < lis.length; i++) {
        if (domUtils.hasClass(lis[i], 'selected')) {
          var img = lis[i].firstChild,
            src = img.getAttribute('_src');
          list.push({
            src: src,
            _src: src,
            floatStyle: align,
          });
        }
      }
      return list;
    },
  };

  dialog.onok = function () {
    updateBackground();
    editor.fireEvent('saveScene');
  };
  dialog.oncancel = function () {
    editor.execCommand('background', backupStyle);
  };
})();