scrollselectlist.as

该系统能实现基于WEB的视频聊天功能。。。。。。。。。。。。。

            if (!multipleSelection || wasKeySelected)
            {
                this.clearSelected(transition);
            } // end if
            if (!(!multipleSelection && _loc7))
            {
                this.selectItem(_loc3, !_loc7);
                var _loc9 = !_loc7 ? ("selected") : ("normal");
                _loc5.drawRow(_loc5.item, _loc9, transition);
            } // end if
            lastSelected = _loc3;
        } // end else if
        if (wasKeySelected)
        {
            this.dispatchEvent({type: "change"});
        } // end if
        delete this.wasKeySelected;
    } // End of the function
    function dragScroll(Void)
    {
        clearInterval(dragScrolling);
        if (_ymouse < 0)
        {
            this.setVPosition(__vPosition - 1);
            this.selectRow(0, false);
            var _loc2 = Math.min(-_ymouse - 30, 0);
            scrollInterval = 5.930000E-001 * _loc2 * _loc2 + 1 + minScrollInterval;
            dragScrolling = setInterval(this, "dragScroll", scrollInterval);
            this.dispatchEvent({type: "scroll", direction: "vertical", position: __vPosition});
        }
        else if (_ymouse > __height)
        {
            var _loc3 = __vPosition;
            this.setVPosition(__vPosition + 1);
            if (_loc3 != __vPosition)
            {
                this.selectRow(__rowCount - 1 - roundUp, false);
            } // end if
            _loc2 = Math.min(_ymouse - __height - 30, 0);
            scrollInterval = 5.930000E-001 * _loc2 * _loc2 + 1 + minScrollInterval;
            dragScrolling = setInterval(this, "dragScroll", scrollInterval);
            this.dispatchEvent({type: "scroll", direction: "vertical", position: __vPosition});
        }
        else
        {
            dragScrolling = setInterval(this, "dragScroll", 15);
        } // end else if
        updateAfterEvent();
    } // End of the function
    function __onMouseUp(Void)
    {
        clearInterval(dragScrolling);
        delete this.dragScrolling;
        delete this.dragScrolling;
        delete this.isPressed;
        delete this.onMouseUp;
        if (!selectable)
        {
            return;
        } // end if
        if (changeFlag)
        {
            this.dispatchEvent({type: "change"});
        } // end if
        delete this.changeFlag;
    } // End of the function
    function moveSelBy(incr)
    {
        if (!selectable)
        {
            this.setVPosition(__vPosition + incr);
            return;
        } // end if
        var _loc3 = this.getSelectedIndex();
        if (_loc3 == undefined)
        {
            _loc3 = -1;
        } // end if
        var _loc2 = _loc3 + incr;
        _loc2 = Math.max(0, _loc2);
        _loc2 = Math.min(this.getLength() - 1, _loc2);
        if (_loc2 == _loc3)
        {
            return;
        } // end if
        if (_loc3 < __vPosition || _loc3 >= __vPosition + __rowCount)
        {
            this.setVPosition(_loc3);
        } // end if
        if (_loc2 >= __vPosition + __rowCount - roundUp || _loc2 < __vPosition)
        {
            this.setVPosition(__vPosition + incr);
        } // end if
        wasKeySelected = true;
        this.selectRow(_loc2 - __vPosition, false);
    } // End of the function
    function keyDown(e)
    {
        if (selectable)
        {
            if (this.findInputText())
            {
                return;
            } // end if
        } // end if
        if (e.code == 40)
        {
            this.moveSelBy(1);
        }
        else if (e.code == 38)
        {
            this.moveSelBy(-1);
        }
        else if (e.code == 34)
        {
            if (selectable)
            {
                var _loc3 = this.getSelectedIndex();
                if (_loc3 == undefined)
                {
                    _loc3 = 0;
                } // end if
                this.setVPosition(_loc3);
            } // end if
            this.moveSelBy(__rowCount - 1 - roundUp);
        }
        else if (e.code == 33)
        {
            if (selectable)
            {
                _loc3 = this.getSelectedIndex();
                if (_loc3 == undefined)
                {
                    _loc3 = 0;
                } // end if
                this.setVPosition(_loc3);
            } // end if
            this.moveSelBy(1 - __rowCount + roundUp);
        }
        else if (e.code == 36)
        {
            this.moveSelBy(-__dataProvider.length);
        }
        else if (e.code == 35)
        {
            this.moveSelBy(__dataProvider.length);
        } // end else if
    } // End of the function
    function findInputText(Void)
    {
        var _loc2 = Key.getAscii();
        if (_loc2 >= 33 && _loc2 <= 126)
        {
            this.findString(String.fromCharCode(_loc2));
            return (true);
        } // end if
    } // End of the function
    function findString(str)
    {
        if (__dataProvider.length == 0)
        {
            return;
        } // end if
        var _loc4 = this.getSelectedIndex();
        var _loc6 = 0;
        for (var _loc3 = _loc4 + 1; _loc3 != _loc4; ++_loc3)
        {
            var _loc2 = __dataProvider.getItemAt(_loc3);
            if (_loc2 instanceof XMLNode)
            {
                _loc2 = _loc2.attributes[__labelField];
            }
            else if (typeof(_loc2) != "string")
            {
                _loc2 = String(_loc2[__labelField]);
            } // end else if
            _loc2 = _loc2.substring(0, str.length);
            if (str == _loc2 || str.toUpperCase() == _loc2.toUpperCase())
            {
                _loc6 = _loc3 - _loc4;
                break;
            } // end if
            if (_loc3 >= this.getLength() - 1)
            {
                _loc3 = -1;
            } // end if
        } // end of for
        if (_loc6 != 0)
        {
            this.moveSelBy(_loc6);
        } // end if
    } // End of the function
    function onRowPress(rowIndex)
    {
        if (!enabled)
        {
            return;
        } // end if
        isPressed = true;
        dragScrolling = setInterval(this, "dragScroll", 15);
        onMouseUp = __onMouseUp;
        if (!selectable)
        {
            return;
        } // end if
        this.selectRow(rowIndex);
    } // End of the function
    function onRowRelease(rowIndex)
    {
    } // End of the function
    function onRowRollOver(rowIndex)
    {
        if (!enabled)
        {
            return;
        } // end if
        var _loc2 = rows[rowIndex].item;
        if (this.getStyle("useRollOver") && _loc2 != undefined)
        {
            rows[rowIndex].drawRow(_loc2, "highlighted", false);
        } // end if
        this.dispatchEvent({type: "itemRollOver", index: rowIndex + __vPosition});
    } // End of the function
    function onRowRollOut(rowIndex)
    {
        if (!enabled)
        {
            return;
        } // end if
        if (this.getStyle("useRollOver"))
        {
            rows[rowIndex].drawRow(rows[rowIndex].item, this.getStateAt(rowIndex + __vPosition), false);
        } // end if
        this.dispatchEvent({type: "itemRollOut", index: rowIndex + __vPosition});
    } // End of the function
    function onRowDragOver(rowIndex)
    {
        if (!enabled || isPressed != true || !selectable)
        {
            return;
        } // end if
        if (dropEnabled)
        {
        }
        else if (dragScrolling)
        {
            this.selectRow(rowIndex, false);
        }
        else
        {
            onMouseUp = __onMouseUp;
            this.onRowPress(rowIndex);
        } // end else if
    } // End of the function
    function onRowDragOut(rowIndex)
    {
        if (!enabled)
        {
            return;
        } // end if
        if (dragEnabled)
        {
        }
        else
        {
            this.onRowRollOut(rowIndex);
        } // end else if
    } // End of the function
    function init(Void)
    {
        super.init();
        tabEnabled = true;
        tabChildren = false;
        if (__dataProvider == undefined)
        {
            __dataProvider = new Array();
            __dataProvider.addEventListener("modelChanged", this);
        } // end if
        baseRowZ = topRowZ = 10;
    } // End of the function
    function createChildren(Void)
    {
        super.createChildren();
        listContent = this.createEmptyMovieClip("content_mc", CONTENTDEPTH);
        invLayoutContent = true;
        this.invalidate();
    } // End of the function
    function draw(Void)
    {
        if (invRowHeight)
        {
            delete this.invRowHeight;
            __rowCount = 0;
            listContent.removeMovieClip();
            listContent = this.createEmptyMovieClip("content_mc", CONTENTDEPTH);
        } // end if
        if (invUpdateControl)
        {
            this.updateControl();
        } // end if
        border_mc.draw();
    } // End of the function
    function invalidateStyle(propName)
    {
        if (isRowStyle[propName])
        {
            invUpdateControl = true;
            this.invalidate();
        }
        else
        {
            for (var _loc3 = 0; _loc3 < __rowCount; ++_loc3)
            {
                rows[_loc3].invalidateStyle(propName);
            } // end of for
        } // end else if
        super.invalidateStyle(propName);
    } // End of the function
    static var mixIt1 = mx.controls.listclasses.DataSelector.Initialize(mx.controls.listclasses.ScrollSelectList);
    static var mixIt2 = mx.controls.listclasses.DataProvider.Initialize(Array);
    var CONTENTDEPTH = 100;
    var __hPosition = 0;
    var __rowRenderer = "SelectableRow";
    var __rowHeight = 22;
    var __rowCount = 0;
    var __labelField = "label";
    var minScrollInterval = 30;
    var dropEnabled = false;
    var dragEnabled = false;
    var className = "ScrollSelectList";
    var isRowStyle = {styleName: true, backgroundColor: true, selectionColor: true, rollOverColor: true, selectionDisabledColor: true, backgroundDisabledColor: true, textColor: true, textSelectedColor: true, textRollOverColor: true, textDisabledColor: true, alternatingRowColors: true, defaultIcon: true};
    var roundUp = 0;
    var selectable = true;
    var multipleSelection = false;
} // End of Class