suite.js

这是一个关于java的JSP页面中使用象Swing组件的一个库文件.

function uiShift_Suite(list) {
  this._super();
  this.__list = list;
  this.__handler = this.__list.getItemHandler();
}
uiShift_Suite = uiUtil_Object.declareClass(uiShift_Suite, uiUtil_Object);
uiShift_Suite.prototype._initUpTrigger = function(trigger) {
  this.__upTrigger = trigger;
  var suite = this;
  this.__upTrigger.appendMousePressHandler(function(e) {
    suite.__shiftUp();
  });
};
uiShift_Suite.prototype._initDownTrigger = function(trigger) {
  this.__downTrigger = trigger;
  var suite = this;
  this.__downTrigger.appendMousePressHandler(function(e) {
    suite.__shiftDown();
  });
};
uiShift_Suite.prototype._initFirstTrigger = function(trigger) {
  this.__firstTrigger = trigger;
  var suite = this;
  this.__firstTrigger.appendEventHandler("mousedown", function(e) {
    suite.__shiftFirst();
  });
};
uiShift_Suite.prototype._initLastTrigger = function(trigger) {
  this.__lastTrigger = trigger;
  var suite = this;
  this.__lastTrigger.appendEventHandler("mousedown", function(e) {
    suite.__shiftLast();
  });
};
uiShift_Suite.prototype.__shiftItemUp = function(index) {
  var shiftedUp = this.__handler.clone(this.__list.getItemAt(index));
  var shiftedDown = this.__list.getItemAt(index - 1);
  this.__list.setItemAt(index - 1, shiftedUp);
  this.__list.setItemAt(index, shiftedDown);
};
uiShift_Suite.prototype.__shiftUp = function() {
  var num = 1;
  if (this.__distanceText != null) {
    num = parseInt(this.__distanceText.getDomObject().value);
    if(isNaN(num)) {
      return;
    }
  }
  var listSize = this.__list.size();
  var selectedIndices = new Array();
  for (var i = 0; i < listSize; ++i) {
    var item = this.__list.getItemAt(i);
    if (this.__handler.isSelected(item)) {
      selectedIndices.push(i);
    }
  }
  for (var i = 0; i < selectedIndices.length; ++i) {
    var index = selectedIndices[i];
    if(index - num < 0) {
      num = index;
      break;
    }
    else {
      this.__unselect(this.__list.getItemAt(index));
      for(var j = 0; j < num; ++j) {
        this.__shiftItemUp(index - j);
      }
      selectedIndices[i] = index - num;
    }
  }
  if (num > 0) {
    this.__selectItems(selectedIndices);
  }
};
uiShift_Suite.prototype.__shiftFirst = function() {
  var listSize = this.__list.size();
  var selectedIndices = new Array();
  for(var i = 0; i < listSize; ++i) {
    var item = this.__list.getItemAt(i);
    if (this.__handler.isSelected(item)) {
      selectedIndices.push(i);
    }
  }
  var numPushed = 0;
  for (var i = 0; i < selectedIndices.length; ++i) {
    var index = selectedIndices[i];
    this.__unselect(this.__list.getItemAt(index));
    var num = index - numPushed;
    for(var j = 0; j < num; ++j) {
      this.__shiftItemUp(index - j);
      selectedIndices[i] = numPushed;
    }
    ++numPushed;
  }
  this.__selectItems(selectedIndices);
  this.__list.scrollToTop();
};
uiShift_Suite.prototype.__select = function(item) {
  item.selected = true;
};
uiShift_Suite.prototype.__unselect = function(item) {
  item.selected = false;
};
uiShift_Suite.prototype.__shiftItemDown = function(index) {
  var shiftedDown = this.__handler.clone(this.__list.getItemAt(index));
  var shiftedUp = this.__list.getItemAt(index + 1);
  this.__list.setItemAt(index + 1, shiftedDown);
  this.__list.setItemAt(index, shiftedUp);
};
uiShift_Suite.prototype.__shiftDown = function() {
  var num = 1;
  if (this.__distanceText != null) {
    num = parseInt(this.__distanceText.getDomObject().value);
    if(isNaN(num)) {
      return;
    }
  }
  var selectedIndices = new Array();
  var listSize = this.__list.size();
  var lastIndex = listSize - 1;
  for(var i = lastIndex; i >= 0; --i) {
    var item = this.__list.getItemAt(i);
    if (this.__handler.isSelected(item)) {
      selectedIndices.push(i);
    }
  }
  for (var i = 0; i < selectedIndices.length; ++i) {
    var index = selectedIndices[i];
    if(index + num > lastIndex) {
      num = lastIndex - index;
      break;
    }
    else {
      this.__unselect(this.__list.getItemAt(index));
      for(var j = 0; j < num; ++j) {
        this.__shiftItemDown(index + j);
      }
      selectedIndices[i] = index + num;
    }
  }
  if (num > 0) {
    this.__selectItems(selectedIndices);
  }
};
uiShift_Suite.prototype.__shiftLast = function() {
  var listSize = this.__list.size();
  var selectedIndices = new Array();
  for(var i = listSize - 1; i >= 0; --i) {
    var item = this.__list.getItemAt(i);
    if (this.__handler.isSelected(item)) {
      selectedIndices.push(i);
    }
  }
  var numPushed = 0;
  for (var i = 0; i < selectedIndices.length; ++i) {
    var index = selectedIndices[i];
    this.__unselect(this.__list.getItemAt(index));
    var last = listSize - 1;
    var num = last - index - numPushed;
    for(var j = 0; j < num; ++j) {
      this.__shiftItemDown(index + j);
      selectedIndices[i] = last - numPushed;
    }
    ++numPushed;
  }
  this.__selectItems(selectedIndices);
  this.__list.scrollToBottom();
};
uiShift_Suite.prototype.__selectItems = function(selectedIndices) {
  if (uiHtml_Window.getInstance().isOpera()) {
    var suite = this;
    window.setTimeout(function(e) {
      suite.__implSelectItems(selectedIndices);
    }, 0);
  }
  else {
    this.__implSelectItems(selectedIndices);
  }
}
uiShift_Suite.prototype.__implSelectItems = function(selectedIndices) {
  for(var i = 0; i < selectedIndices.length; ++i) {
    this.__select(this.__list.getItemAt(selectedIndices[i]));
  }
}