fix(legacy): release hosted module resources safely

2026-08-30 18:12:09 +08:00
parent 641d3c232d
commit 769aa52241
7 changed files with 362 additions and 12 deletions
@@ -91,6 +91,9 @@ namespace Lskj.PubBill
        private DataTable _detailColumns;
        private bool IsCopying = false;
        private bool _moduleResourcesReleased;
+        private int _preferredSourcePanelWidth;
+        private bool _sourcePanelWidthRestorePending;
+        private bool _restoringSourcePanelWidth;


        protected DataRow BillRowItem;
@@ -260,6 +263,7 @@ namespace Lskj.PubBill
        public BillModule()
        {
            InitializeComponent();
+            this.ssc_main_top.SizeChanged += OnTopSplitterSizeChanged;
        }

        /// <summary>
@@ -275,6 +279,7 @@ namespace Lskj.PubBill
            TryRelease(() => PrintUtil.OnAfterPrint -= new EventHandler(OnReportPrintAfter), "打印回调");
            TryRelease(ReleaseModuleEvents, "模块事件");
            TryRelease(ReleaseModuleDataSources, "模块数据源");
+            TryRelease(DisposeDetachedOwnedSourceControls, "已脱离父容器的来源控件");
            TryRelease(ReleaseRuntimeCollections, "运行时集合");

            BillRowItem = null;
@@ -343,6 +348,7 @@ namespace Lskj.PubBill
                        splitContainer.SplitterMoved -= OnDetailsSplitterMoved;
                        splitContainer.SplitterMoved -= OnSpecialMainSplitterMoved;
                        splitContainer.SplitterMoved -= OnSpecialLeftSplitterMoved;
+                        splitContainer.SizeChanged -= OnTopSplitterSizeChanged;
                    }

                    SimpleButton commonButton = control as SimpleButton;
@@ -390,6 +396,81 @@ namespace Lskj.PubBill
            }
        }

+        private void DisposeDetachedOwnedSourceControls()
+        {
+            // 来源页签切换会通过 Controls.Clear 临时摘下非当前页的控件。
+            // 模块永久关闭时只处理当前 BillModuleModelDic 明确登记的三个
+            // 顶层来源控件，不扫描其他窗体或全局控件树。释放父控件可让
+            // ModuleGridEx 等控件按自身 Dispose 逻辑释放其专属 Grid/BarManager。
+            var ownedSourceControls =
+                new HashSet<System.Windows.Forms.Control>();
+            foreach (BillModuleModel moduleModel in BillModuleModelDic.Values.ToList())
+            {
+                if (moduleModel == null)
+                    continue;
+
+                AddOwnedSourceControl(ownedSourceControls, moduleModel.SourceControl);
+                AddOwnedSourceControl(ownedSourceControls, moduleModel.SourceDetailControl);
+                AddOwnedSourceControl(ownedSourceControls, moduleModel.SourceDetailDetailControl);
+            }
+
+            foreach (System.Windows.Forms.Control sourceControl in ownedSourceControls)
+            {
+                if (sourceControl == null || sourceControl.IsDisposed ||
+                    !IsDetachedFromModuleDisposeChain(sourceControl))
+                {
+                    continue;
+                }
+
+                try
+                {
+                    // 仅释放当前单据持有且已脱离窗体 Dispose 链的实例；
+                    // 不会触碰仍挂在其他 BillModule/Form 下的控件。
+                    sourceControl.Dispose();
+                }
+                catch (Exception exception)
+                {
+                    Debug.WriteLine("释放单据来源控件失败：" + exception);
+                }
+            }
+        }
+
+        private static void AddOwnedSourceControl(
+            HashSet<System.Windows.Forms.Control> target,
+            object sourceControl)
+        {
+            System.Windows.Forms.Control control =
+                sourceControl as System.Windows.Forms.Control;
+            if (target != null && control != null)
+                target.Add(control);
+        }
+
+        private bool IsDetachedFromModuleDisposeChain(
+            System.Windows.Forms.Control control)
+        {
+            System.Windows.Forms.Control current = control;
+            while (current != null)
+            {
+                // 仍在当前模块中时由 FrmMain/BillModule 的正常 Dispose 链处理；
+                // 若被重新挂到其他单据或窗体，也绝不能随当前模块释放。
+                if (current is BillModule ||
+                    current is System.Windows.Forms.Form ||
+                    current is DevExpress.XtraTab.XtraTabPage)
+                    return false;
+
+                try
+                {
+                    current = current.Parent;
+                }
+                catch (ObjectDisposedException)
+                {
+                    return true;
+                }
+            }
+
+            return true;
+        }
+
        private static void AddModuleControlSnapshot(
            List<System.Windows.Forms.Control> target,
            System.Windows.Forms.Control control)
@@ -1015,7 +1096,11 @@ namespace Lskj.PubBill
                            }
                            #endregion
                            #region 加载来源明细
-                            GridControlEx gridDetail = new GridControlEx();
+                            // The concrete source-detail control is selected below.
+                            // Do not allocate a temporary GridControlEx first: replacing
+                            // that unattached instance leaves its GridView subscribed to
+                            // DevExpress global localizer events.
+                            GridControlEx gridDetail = null;
                            if (!string.IsNullOrWhiteSpace(model.DetailModeCode))
                            {

@@ -1126,14 +1211,24 @@ namespace Lskj.PubBill
                // 设置单据来源左侧宽度
                if (this.BillModel.PanelWidth == 0)
                {
+                    this._preferredSourcePanelWidth = 0;
+                    this._sourcePanelWidthRestorePending = false;
                    // 隐藏来源
                    this.ssc_main_top.PanelVisibility = SplitPanelVisibility.Panel2;
                }
                else
                {
                    string width = IniHelper.Read(string.Format("bill_width_{0}", this.SysModel.ModuleCode));
-                    if (!string.IsNullOrEmpty(width))
-                        this.ssc_main_top.SplitterPosition = Convert.ToInt32(width);
+                    int savedWidth;
+                    this._preferredSourcePanelWidth =
+                        !string.IsNullOrEmpty(width) &&
+                        int.TryParse(width, out savedWidth) &&
+                        savedWidth > 0
+                            ? savedWidth
+                            : this.BillModel.PanelWidth;
+                    this._sourcePanelWidthRestorePending =
+                        this._preferredSourcePanelWidth > 0;
+                    TryRestoreSourcePanelWidth();
                }

                // 设置单据来源底部高度
@@ -1155,6 +1250,82 @@ namespace Lskj.PubBill
            }

        }
+
+        private void OnTopSplitterSizeChanged(object sender, EventArgs e)
+        {
+            if (!ReferenceEquals(sender, this.ssc_main_top) ||
+                this._moduleResourcesReleased ||
+                this.BillModel == null ||
+                this.BillModel.PanelWidth <= 0)
+            {
+                return;
+            }
+
+            if (this.ssc_main_top.ClientSize.Width <= 1)
+            {
+                if (this._preferredSourcePanelWidth > 0)
+                {
+                    // WindowsFormsHost temporarily measures a projected page at
+                    // zero while moving it between WPF content presenters. Keep
+                    // the last valid position and restore it after reattachment.
+                    this._sourcePanelWidthRestorePending = true;
+                }
+                return;
+            }
+
+            if (this._isInitFinish &&
+                this._sourcePanelWidthRestorePending &&
+                !this.ssc_main_top.Collapsed)
+            {
+                TryRestoreSourcePanelWidth();
+            }
+        }
+
+        private void TryRestoreSourcePanelWidth()
+        {
+            if (this._restoringSourcePanelWidth ||
+                this._preferredSourcePanelWidth <= 0 ||
+                this.ssc_main_top == null ||
+                this.ssc_main_top.IsDisposed ||
+                this.ssc_main_top.Collapsed)
+            {
+                return;
+            }
+
+            int availableWidth = this.ssc_main_top.ClientSize.Width;
+            if (availableWidth <= 1)
+            {
+                this._sourcePanelWidthRestorePending = true;
+                return;
+            }
+
+            int targetWidth = Math.Min(
+                this._preferredSourcePanelWidth,
+                availableWidth - 1);
+            if (targetWidth <= 0)
+            {
+                this._sourcePanelWidthRestorePending = true;
+                return;
+            }
+
+            this._restoringSourcePanelWidth = true;
+            try
+            {
+                this.ssc_main_top.SplitterPosition = targetWidth;
+                this._sourcePanelWidthRestorePending =
+                    targetWidth < this._preferredSourcePanelWidth;
+            }
+            catch (ArgumentOutOfRangeException)
+            {
+                // The DevExpress panels may not have completed their minimum-size
+                // layout yet. The next SizeChanged event retries this instance.
+                this._sourcePanelWidthRestorePending = true;
+            }
+            finally
+            {
+                this._restoringSourcePanelWidth = false;
+            }
+        }
        /// <summary>
        /// <para>说明：初始化系统配置</para>
        /// <para>创建人：龚宇超</para>
@@ -2630,7 +2801,10 @@ namespace Lskj.PubBill


                //明细为表格
-                GridControlEx gridDetail = new GridControlEx();
+                // Each branch below supplies the actual source-detail control. Avoid
+                // creating a placeholder GridControlEx that is immediately replaced
+                // and never enters a WinForms dispose chain.
+                GridControlEx gridDetail = null;



@@ -2642,7 +2816,6 @@ namespace Lskj.PubBill
                    if (modelRow == null)
                    {
                        MessageUtil.Show($"没有找到编号为 {model.DetailModeCode} 的模块信息");
-                        gridDetail.Parent = gridDetail;
                        continue;
                    }

@@ -8252,11 +8425,25 @@ namespace Lskj.PubBill
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void OnTopSplitterMoved(object sender, EventArgs e)
        {
-            if (this._isInitFinish)// 是否为初始化创建
+            if (this._restoringSourcePanelWidth)
            {
+                return;
+            }
+
+            if (this._isInitFinish &&
+                this.SysModel != null &&
+                this.ssc_main_top.ClientSize.Width > 1 &&
+                this.ssc_main_top.SplitterPosition > 0)// 是否为初始化创建
+            {
+                this._preferredSourcePanelWidth =
+                    this.ssc_main_top.SplitterPosition;
+                this._sourcePanelWidthRestorePending = false;
                IniHelper.Write(string.Format("bill_width_{0}", this.SysModel.ModuleCode), this.ssc_main_top.SplitterPosition + "");
            }
-            this.gcMain.gridControl.Refresh();
+            if (this.gcMain != null && this.gcMain.gridControl != null)
+            {
+                this.gcMain.gridControl.Refresh();
+            }
        }
        /// <summary>
        /// <para>说明：分割条移动保存位置</para>