using FastReport.Auth;
using FastReport.Cloud.FastReport;
using FastReport.Cloud.FastReport.ListViewCloud;
using FastReport.Data;
using FastReport.Design.PageDesigners.Code;
using FastReport.Dialog;
using FastReport.Forms;
using FastReport.Utils;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Windows.Forms;

namespace FastReport.Design
{
    /// <summary>
    /// The base class for all designer commands.
    /// </summary>
    public class DesignerCommand
    {
        private object sender;

        internal Designer Designer { get; }

        internal Report ActiveReport
        {
            get { return Designer.ActiveReport; }
        }

        internal ReportTab ActiveReportTab
        {
            get { return Designer.ActiveReportTab; }
        }

        internal DesignerRestrictions Restrictions
        {
            get { return Designer.Restrictions; }
        }

        internal SelectedObjectCollection SelectedObjects
        {
            get { return Designer.SelectedObjects; }
        }

        internal SelectedReportComponents SelectedReportComponents
        {
            get { return Designer.SelectedReportComponents; }
        }

        internal void SetModified(string action)
        {
            Designer.SetModified(sender, action);
        }


        /// <summary>
        /// Gets a value indicating that the command is enabled.
        /// </summary>
        /// <remarks>
        /// If you use own controls that invoke designer commands, use this property to refresh
        /// the <b>Enabled</b> state of a control that is bound to this command.
        /// </remarks>
        public bool Enabled
        {
            get { return GetEnabled(); }
        }

        /// <summary>
        /// Defines a custom action for this command.
        /// </summary>
        /// <remarks>
        /// Using custom action, you can override the standard behavior of this designer's command.
        /// </remarks>
        /// <example>
        /// This example demonstrates how to override the "New..." command behavior.
        /// <code>
        /// // add an event handler that will be fired when the designer is run
        /// Config.DesignerSettings.DesignerLoaded += new EventHandler(DesignerSettings_DesignerLoaded);
        ///
        /// void DesignerSettings_DesignerLoaded(object sender, EventArgs e)
        /// {
        ///   // override "New..." command behavior
        ///   (sender as Designer).cmdNew.CustomAction += new EventHandler(cmdNew_CustomAction);
        /// }
        ///
        /// void cmdNew_CustomAction(object sender, EventArgs e)
        /// {
        ///   // show the "Label" wizard instead of standard "Add New Item" dialog
        ///   Designer designer = sender as Designer;
        ///   LabelWizard wizard = new LabelWizard();
        ///   wizard.Run(designer);
        /// }
        /// </code>
        /// </example>
        public event EventHandler CustomAction;

        /// <summary>
        /// Gets a value for the <b>Enabled</b> property.
        /// </summary>
        /// <returns><b>true</b> if command is enabled.</returns>
        protected virtual bool GetEnabled()
        {
            return true;
        }

        /// <summary>
        /// Invokes the command.
        /// </summary>
        public virtual void Invoke()
        {
        }

        /// <summary>
        /// Invokes the command with specified sender and event args.
        /// </summary>
        /// <param name="sender">Sender.</param>
        /// <param name="e">Event args.</param>
        /// <remarks>
        /// This method is compatible with standard <see cref="EventHandler"/> and can be passed
        /// to the event handler constructor directly.
        /// </remarks>
        public void Invoke(object sender, EventArgs e)
        {
            if (CustomAction != null)
                CustomAction(Designer, e);
            else
            {
                this.sender = sender;
                Invoke();
            }
        }

        internal DesignerCommand(Designer designer)
        {
            this.Designer = designer;
        }
    }

    /// <summary>
    /// Represents the "File|New" command.
    /// </summary>
    public class NewCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontCreateReport &&
              (Designer.MdiMode || ActiveReportTab != null);
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            using (AddNewItemForm form = new AddNewItemForm(Designer))
            {
                if (form.ShowDialog() == DialogResult.OK)
                    form.SelectedWizard.Run(Designer);
            }
        }

        internal NewCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "New Page" toolbar command.
    /// </summary>
    public class NewPageCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontCreatePage && ActiveReport != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            ActiveReportTab.NewReportPage();
        }

        internal NewPageCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "New Dialog" toolbar command.
    /// </summary>
    public class NewDialogCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontCreatePage && ActiveReport != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            ActiveReportTab.NewDialog();
        }

        internal NewDialogCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Open..." command. Also can be used for loading a file
    /// from the recent files list.
    /// </summary>
    public class OpenCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontLoadReport &&
              (Designer.MdiMode || ActiveReportTab != null);
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            LoadFile("");
        }

        /// <summary>
        /// Loads a specified report file.
        /// </summary>
        /// <param name="fileName">File to load.</param>
        /// <param name="silent">true to suppress message dialog if load is failed.</param>
        public void LoadFile(string fileName, bool silent = false)
        {
            ReportTab reportTab = null;
            if (Designer.MdiMode)
            {
                // check if file is already opened
                if (!String.IsNullOrEmpty(fileName))
                {
                    foreach (DocumentWindow c in Designer.Documents)
                    {
                        if (c is ReportTab && String.Compare((c as ReportTab).Report.FileName, fileName, true) == 0)
                        {
                            c.Activate();
                            return;
                        }
                    }
                }

                Report report = new Report();
                report.Designer = Designer;
                reportTab = Designer.CreateReportTab(report);
            }
            else
                reportTab = ActiveReportTab;

            if (reportTab.LoadFile(fileName, silent))
            {
                if (Designer.MdiMode)
                    Designer.AddReportTab(reportTab);
            }
            else if (Designer.MdiMode)
                reportTab.Dispose();
        }

        internal OpenCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Open page..." command.
    /// </summary>
    public class OpenPageCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontLoadReport &&
              (Designer.MdiMode || ActiveReportTab != null);
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            LoadFile("");
        }

        /// <summary>
        /// Loads report file and paginating it.
        /// </summary>
        /// <param name="fileName">File to load.</param>
        /// 
        public void LoadFile(string fileName)
        {
            OpenSaveDialogEventArgs e = new OpenSaveDialogEventArgs(Designer);

            if (String.IsNullOrEmpty(fileName))
            {
                Config.DesignerSettings.OnCustomOpenDialog(Designer, e);
                if (e.Cancel)
                    return;
                fileName = e.FileName;
            }

            try
            {
                Report report = new Report();
                report.Load(fileName);

                using (OpenPageForm addPageToReportForm = new OpenPageForm(Designer, report))
                {
                    addPageToReportForm.ShowDialog();
                }
            }
#if !DEBUG
            catch (Exception ex)
            {
                FRMessageBox.Error(String.Format(Res.Get("Messages,CantLoadReport") + "\r\n" + ex.Message, fileName));
            }
#endif
            finally
            { }
        }

        internal OpenPageCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Open from Cloud..." command. Also can be used for loading a file
    /// from the recent files list.
    /// </summary>
    public class OpenViaCloudCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontLoadReport && (Designer.MdiMode || ActiveReportTab != null);
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            LoadFromInstance(CloudCommands.LoadFile());
        }

        /// <summary>
        /// Loads file from the recent files list.
        /// </summary>
        /// <param name="key">File name.</param>
        /// <param name="id">File ID.</param>
        public async void LoadFile(string key, string id)
        {
            if (!CloudCommands.CheckAuthentication())
                return;

            Config.ReportSettings.OnStartLoadingProgress(Designer.MdiMode ? null : ActiveReportTab);
            try
            {
                LoadFromInstance(await CloudCommands.LoadFile(key, id));
            }
            finally
            {
                Config.ReportSettings.OnFinishLoadingProgress(Designer.MdiMode ? null : ActiveReportTab);
            }
        }

        private void LoadFromInstance(OpeningInstance instance)
        {
            if (instance?.ReportStream != null)
            {
                ReportTab reportTab = null;
                if (Designer.MdiMode)
                {
                    Report report = new Report();
                    report.Designer = Designer;
                    reportTab = Designer.CreateReportTab(report);
                }
                else
                    reportTab = ActiveReportTab;

                if (reportTab.LoadFileFromCloud(instance))
                {
                    if (Designer.MdiMode)
                        Designer.AddReportTab(reportTab);
                }
                else if (Designer.MdiMode)
                    reportTab.Dispose();
            }
        }

        internal OpenViaCloudCommand(Designer designer)
            : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Save" command.
    /// </summary>
    public class SaveCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontSaveReport &&
              ActiveReportTab != null &&
              ActiveReportTab.Modified;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            ActiveReportTab.SaveFile(false);
        }

        internal SaveCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Save to Cloud" command.
    /// </summary>
    public class SaveToCloudCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontSaveReport && ActiveReportTab != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            var fileVM = CloudCommands.SaveReportFile(ActiveReport);
            if (fileVM != null)
            {
                ActiveReport.FileName = fileVM.Name;
                ActiveReport.CloudFileInfo = new CloudFileInfo(fileVM);
                Designer.cmdRecentFiles.AddCloudReport(ActiveReport);
                Designer.UpdatePlugins(null);
                ActiveReportTab.UpdateCaption();
            }
        }

        internal SaveToCloudCommand(Designer designer)
            : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Save As..." command.
    /// </summary>
    public class SaveAsCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontSaveReport && ActiveReportTab != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            ActiveReportTab.SaveFile(true);
        }

        internal SaveAsCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Save With Random Data..." command.
    /// </summary>
    public class SaveWithRandomDataCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontSaveReport && ActiveReportTab != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            ActiveReportTab.SaveWithRandomData();
        }

        internal SaveWithRandomDataCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Save All" command.
    /// </summary>
    public class SaveAllCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            bool enabled = Designer.MdiMode && Designer.Documents.Count > 0;
            if (Designer.Documents.Count == 1 && Designer.Documents[0] is StartPageTab)
                enabled = false;
            return !Restrictions.DontSaveReport && enabled;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            foreach (DocumentWindow c in Designer.Documents)
            {
                if (c is ReportTab)
                    (c as ReportTab).SaveFile(false);
            }
        }

        internal SaveAllCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Close" command.
    /// </summary>
    public class CloseCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return Designer.MdiMode && Designer.Documents.Count > 0;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            if (Designer.ActiveReportTab != null)
                Designer.CloseDocument(ActiveReportTab);
            else if (Designer.StartPage != null)
                Designer.CloseDocument(Designer.StartPage);
        }

        internal CloseCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Window|Close All" command.
    /// </summary>
    public class CloseAllCommand : CloseCommand
    {
        /// <inheritdoc/>
        public override void Invoke()
        {
            int i = 0;
            while (i < Designer.Documents.Count)
            {
                DocumentWindow c = Designer.Documents[i];
                if (c is StartPageTab || !Designer.CloseDocument(c))
                    i++;
            }
        }

        internal CloseAllCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Preview..." command.
    /// </summary>
    public class PreviewCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontPreviewReport && ActiveReport != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            ActiveReportTab.Preview();
        }

        internal PreviewCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Preview on Cloud..." command.
    /// </summary>
    public class PreviewCloudCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return ActiveReport != null && ActiveReport.IsOpenedFromCloud;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            if (ActiveReportTab.Modified)
                ActiveReportTab.SaveFile(false);
            CloudCommands.PreviewReport(ActiveReport);
        }

        internal PreviewCloudCommand(Designer designer) : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Page Setup..." command.
    /// </summary>
    public class PageSettingsCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontChangePageOptions &&
              ActiveReport != null &&
              ActiveReportTab.ActivePage is ReportPage;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            IHasEditor page = ActiveReportTab.ActivePage as IHasEditor;
            if (page.InvokeEditor())
            {
                SetModified("EditPage");
            }
        }

        internal PageSettingsCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Report|Options..." command.
    /// </summary>
    public class ReportSettingsCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontChangeReportOptions && ActiveReport != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            using (ReportOptionsForm form = new ReportOptionsForm(ActiveReport))
            {
                ActiveReport.ScriptText = ActiveReportTab.Script;
                if (form.ShowDialog() == DialogResult.OK)
                {
                    ActiveReportTab.Script = ActiveReport.ScriptText;
                    (ActiveReportTab.Plugins.Find("Code") as CodePageDesigner).UpdateLanguage();
                    SetModified("EditReport");
                }
            }
        }

        internal ReportSettingsCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Printer Setup..." command.
    /// </summary>
    public class PrinterSettingsCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontChangeReportOptions && ActiveReport != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            using (PrinterSetupForm editor = new PrinterSetupForm())
            {
                editor.Report = ActiveReport;
                if (editor.ShowDialog() == DialogResult.OK)
                {
                    SetModified("EditPrinter");
                }
            }
        }

        internal PrinterSettingsCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit|Undo" command.
    /// </summary>
    public class UndoCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return ActiveReport != null && ActiveReportTab.CanUndo;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            Undo(1);
        }

        /// <summary>
        /// Undo several actions.
        /// </summary>
        /// <param name="actionsCount">Number of actions to undo.</param>
        public void Undo(int actionsCount)
        {
            ActiveReportTab.Undo(actionsCount);
        }

        internal UndoCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit|Redo" command.
    /// </summary>
    public class RedoCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return ActiveReport != null && ActiveReportTab.CanRedo;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            Redo(1);
        }

        /// <summary>
        /// Redo several actions.
        /// </summary>
        /// <param name="actionsCount">Number of actions to redo.</param>
        public void Redo(int actionsCount)
        {
            ActiveReportTab.Redo(actionsCount);
        }

        internal RedoCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit|Cut" command.
    /// </summary>
    public class CutCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            if (ActiveReportTab == null || ActiveReportTab.ActivePageDesigner == null)
                return false;
            return ActiveReportTab.ActivePageDesigner.CanCopy();
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            ActiveReportTab.ActivePageDesigner.Cut();
        }

        internal CutCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit|Copy" command.
    /// </summary>
    public class CopyCommand : CutCommand
    {
        /// <inheritdoc/>
        public override void Invoke()
        {
            ActiveReportTab.ActivePageDesigner.Copy();
        }

        internal CopyCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit|Copy Page" command.
    /// </summary>
    public class CopyPageCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontCopyPage && ActiveReport != null && ActiveReportTab.ActivePage != null &&
                ActiveReport.Pages.Count > 0 && (ActiveReportTab.ActivePage is ReportPage || ActiveReportTab.ActivePage is DialogPage) &&
                !ActiveReportTab.ActivePage.IsAncestor;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            if (Enabled)
            {
                ActiveReportTab.CopyPage();
            }
        }

        internal CopyPageCommand(Designer designer) : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit|Paste" command.
    /// </summary>
    public class PasteCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            if (ActiveReportTab == null || ActiveReportTab.ActivePageDesigner == null)
                return false;
            return ActiveReportTab.ActivePageDesigner.CanPaste();
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            ActiveReportTab.ActivePageDesigner.Paste();
        }

        internal PasteCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Format Painter" toolbar command.
    /// </summary>
    public class FormatPainterCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return ActiveReportTab != null &&
              ActiveReportTab.ActivePage != null &&
              SelectedReportComponents.Count > 0;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            Designer.FormatPainter = !Designer.FormatPainter;
        }

        internal FormatPainterCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit|Delete" command.
    /// </summary>
    public class DeleteCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            bool enable = SelectedObjects.Count > 0;
            bool сanDeleteBand = CanDeleteBand();
            if (enable && SelectedObjects.Count == 1 &&
              (!сanDeleteBand || !SelectedObjects[0].HasFlag(Flags.CanDelete) ||
                SelectedObjects[0].HasRestriction(FastReport.Restrictions.DontDelete)))
                enable = false;
            return enable;
        }

        private bool CanDeleteBand()
        {
            if (SelectedObjects.Count == 0)
                return true;
            int countBands = CountBands();
            if (SelectedObjects[0] is ChildBand)
                return true;
            if (SelectedObjects[0] is BandBase && !(SelectedObjects[0] is ChildBand))
                return countBands > 1;
            return true;
        }

        private int CountBands()
        {
            int count = 0;
            foreach (Base c in Designer.Objects)
                if (c is BandBase && !(c is ChildBand))
                    count++;
            return count;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            if (SelectedObjects.IsPageSelected || SelectedObjects.IsReportSelected)
                return;

            foreach (Base c in SelectedObjects)
            {
                if (!c.HasFlag(Flags.CanDelete) || c.HasRestriction(FastReport.Restrictions.DontDelete))
                    continue;
                else
                {
                    if (c.IsAncestor)
                    {
                        FRMessageBox.Error(String.Format(Res.Get("Messages,DeleteAncestor"), c.Name));
                        return;
                    }
                    foreach (Base b in c.AllObjects)
                    {
                        if (b is SubreportObject) b.Delete();
                    }
                    c.Delete();
                }
            }

            SetModified("Delete");
            Designer.SelectionChanged(null);
        }

        internal DeleteCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit|Delete Page" command.
    /// </summary>
    public class DeletePageCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontDeletePage && ActiveReport != null &&
              ActiveReportTab.ActivePage != null &&
              ActiveReport.Pages.Count > 1 &&
              !ActiveReportTab.ActivePage.IsAncestor;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            if (Enabled)
            {
                ActiveReportTab.DeletePage();
            }
        }

        internal DeletePageCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit|Select All" command.
    /// </summary>
    public class SelectAllCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return ActiveReportTab != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            if (ActiveReportTab != null)
                ActiveReportTab.ActivePageDesigner.SelectAll();
        }

        internal SelectAllCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit|Group" command.
    /// </summary>
    public class GroupCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return SelectedObjects.Count > 1;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            Dictionary<int, int> groups = new Dictionary<int, int>();

            // collect used group indices
            ObjectCollection allObjects = ActiveReport.AllObjects;
            foreach (Base c in Designer.Objects)
            {
                if (c is ComponentBase)
                {
                    int index = (c as ComponentBase).GroupIndex;
                    if (!groups.ContainsKey(index))
                        groups.Add(index, 0);
                }
            }

            // find index that not in use
            int groupIndex;
            for (groupIndex = 1; ; groupIndex++)
            {
                if (!groups.ContainsKey(groupIndex))
                    break;
            }

            foreach (Base c in SelectedObjects)
            {
                ComponentBase obj = c as ComponentBase;
                if (obj != null && obj.HasFlag(Flags.CanGroup))
                    obj.GroupIndex = groupIndex;
            }
        }

        internal GroupCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit|Ungroup" command.
    /// </summary>
    public class UngroupCommand : GroupCommand
    {
        /// <inheritdoc/>
        public override void Invoke()
        {
            foreach (Base c in SelectedObjects)
            {
                if (c is ComponentBase)
                    (c as ComponentBase).GroupIndex = 0;
            }
        }

        internal UngroupCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit" command.
    /// </summary>
    public class EditCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return SelectedObjects.Count == 1 && SelectedObjects[0] is IHasEditor;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            if (!SelectedObjects[0].HasRestriction(FastReport.Restrictions.DontEdit) &&
              (SelectedObjects[0] as IHasEditor).InvokeEditor())
                SetModified("EditObject");
        }

        internal EditCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Edit|Find..." command.
    /// </summary>
    public class FindCommand : DesignerCommand
    {
        internal bool isReplace;

        private void searchForm_FormClosed(object sender, FormClosedEventArgs e)
        {
            (sender as Form).Dispose();
        }

        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return ActiveReportTab != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            SearchReplaceForm form = new SearchReplaceForm(Designer, isReplace);
            form.Replace = isReplace;
            form.FormClosed += new FormClosedEventHandler(searchForm_FormClosed);
            form.Show();
        }

        internal FindCommand(Designer designer)
          : base(designer)
        {
            isReplace = false;
        }
    }

    /// <summary>
    /// Represents the "Edit|Replace..." command.
    /// </summary>
    public class ReplaceCommand : FindCommand
    {
        internal ReplaceCommand(Designer designer)
          : base(designer)
        {
            isReplace = true;
        }
    }

    /// <summary>
    /// Represents the "Bring To Front" context menu command.
    /// </summary>
    public class BringToFrontCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            bool enable = SelectedObjects.Count > 0;
            if (enable && SelectedObjects.Count == 1 && !SelectedObjects[0].HasFlag(Flags.CanChangeOrder))
                enable = false;
            return enable;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            foreach (Base c in SelectedObjects)
            {
                c.ZOrder = 1000;
            }
            SetModified("Change");
        }

        internal BringToFrontCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Send To Back" context menu command.
    /// </summary>
    public class SendToBackCommand : BringToFrontCommand
    {
        /// <inheritdoc/>
        public override void Invoke()
        {
            foreach (Base c in SelectedObjects)
            {
                c.ZOrder = 0;
            }
            SetModified("Change");
        }

        internal SendToBackCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Insert" command.
    /// </summary>
    /// <remarks>
    /// This command has no default action associated with it. Check the <b>Enabled</b> property
    /// to see if the insert operation is enabled.
    /// </remarks>
    public class InsertCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontInsertObject &&
              ActiveReportTab != null &&
              ActiveReportTab.ActivePage != null;
        }

        internal InsertCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Insert Band" command.
    /// </summary>
    /// <remarks>
    /// This command has no default action associated with it. Check the <b>Enabled</b> property
    /// to see if the insert operation is enabled.
    /// </remarks>
    public class InsertBandCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontInsertObject && !Restrictions.DontInsertBand && ActiveReportTab != null &&
              ActiveReportTab.ActivePage != null && ActiveReportTab.ActivePage is ReportPage;
        }

        internal InsertBandCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Data|Add Data Source..." command.
    /// </summary>
    public class AddDataCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontCreateData && ActiveReport != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            using (DataWizardForm form = new DataWizardForm(ActiveReport))
            {
                /*if (Designer.SelectedObjects.Count == 1 && Designer.SelectedObjects[0] is DataConnectionBase)
                {
                  form.Connection = Designer.SelectedObjects[0] as DataConnectionBase;
                  form.EditMode = true;
                  form.VisiblePanelIndex = 1;
                }*/
                if (form.ShowDialog() == DialogResult.OK)
                    SetModified("EditData");
            }
        }

        internal AddDataCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Data|Sort Data Sources" command.
    /// </summary>
    public class SortDataSourcesCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            if (Restrictions.DontSortDataSources || ActiveReport == null)
                return false;

            FRCollectionBase dataSources = ActiveReport.Dictionary.DataSources;
            if (Designer.SelectedObjects.Count == 1 && Designer.SelectedObjects[0] is DataConnectionBase conn)
                dataSources = conn.Tables;

            int enabledDataSources = 0;
            foreach (DataSourceBase dataSource in dataSources)
            {
                if (dataSource.Enabled)
                {
                    enabledDataSources++;
                    if (enabledDataSources > 1)
                        return true;
                }
            }

            return false;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            if (Designer.SelectedObjects.Count == 1 && Designer.SelectedObjects[0] is DataConnectionBase conn)
                conn.Tables.Sort();
            else
                ActiveReport.Dictionary.DataSources.Sort();
            SetModified("EditData");
        }

        internal SortDataSourcesCommand(Designer designer) : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Data|Choose Report Data..." command.
    /// </summary>
    public class ChooseDataCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontEditData && ActiveReport != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            using (ReportDataForm form = new ReportDataForm(ActiveReport))
            {
                if (form.ShowDialog() == DialogResult.OK)
                    SetModified("SelectData");
            }
        }

        internal ChooseDataCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Recent Files" command.
    /// </summary>
    /// <remarks>
    /// This command has no default action associated with it. Check the <b>Enabled</b> property
    /// to see if the recent files list is enabled.
    /// </remarks>
    public class RecentFilesCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontShowRecentFiles &&
              (Designer.MdiMode || ActiveReportTab != null);
        }

        internal void Update(string newFile)
        {
            if (!String.IsNullOrEmpty(newFile))
            {
                if (Designer.RecentFiles.IndexOf(newFile) != -1)
                    Designer.RecentFiles.RemoveAt(Designer.RecentFiles.IndexOf(newFile));
                Designer.RecentFiles.Add(newFile);
                while (Designer.RecentFiles.Count > 8)
                    Designer.RecentFiles.RemoveAt(0);
            }
        }

        internal void AddCloudReport(Report report)
        {
            if (report.CloudFileInfo == null)
                return;

            string fileName = report.CloudFileInfo.FileName;
            string id = report.CloudFileInfo.FileId;
            if (!string.IsNullOrEmpty(fileName) && !string.IsNullOrEmpty(id))
            {
                if (Designer.CloudReportDictionary.ContainsKey(fileName))
                    Designer.CloudReportDictionary.Remove(fileName);
                Designer.CloudReportDictionary.Add(fileName, id);
                DeleteRedundants();
                Update(fileName);
            }
        }

        private void DeleteRedundants()
        {
            if (Designer.CloudReportDictionary.Count > 8)
            {
                var toSkip = Designer.CloudReportDictionary.Count - 8;
                var current = 0;
                var tempDict = new Dictionary<string, string>();
                foreach (var keyValuePair in Designer.CloudReportDictionary)
                {
                    if (current >= toSkip)
                    {
                        tempDict.Add(keyValuePair.Key, keyValuePair.Value);
                    }

                    current++;
                }
                Designer.CloudReportDictionary = tempDict;
            }
        }

        /// <summary>
        /// Returns true if the file specified is a cloud file.
        /// </summary>
        /// <param name="fileName">File name to check.</param>
        /// <returns>true if file is a cloud file.</returns>
        public bool IsCloudFile(string fileName) => Designer.CloudReportDictionary.Keys.Contains(fileName);

        /// <summary>
        /// Opens a recent file with specified name either from local PC or from cloud.
        /// </summary>
        /// <param name="fileName">File name to open.</param>
        public void LoadFile(string fileName)
        {
            try
            {
                if (IsCloudFile(fileName))
                {
                    Designer.cmdOpenViaCloud.LoadFile(fileName, Designer.CloudReportDictionary[fileName]);
                }
                else
                {
                    Designer.cmdOpen.LoadFile(fileName, true);
                }
            }
            catch (Exception ex)
            {
                if (FRMessageBox.Confirm(String.Format(Res.Get("Messages,CantLoadReport") + "\r\n" + ex.Message, fileName) + "\r\n\r\n" +
                    Res.Get("Messages,RemoveFromRecentFiles"), MessageBoxButtons.YesNo) == DialogResult.Yes)
                {
                    Designer.RecentFiles.Remove(fileName);
                    if (IsCloudFile(fileName))
                        Designer.CloudReportDictionary.Remove(fileName);
                }
            }
            Designer.UpdatePlugins(null);
        }

        internal RecentFilesCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "File|Select Language..." command.
    /// </summary>
    public class SelectLanguageCommand : DesignerCommand
    {
        /// <inheritdoc/>
        public override void Invoke()
        {
            using (SelectLanguageForm form = new SelectLanguageForm())
            {
                if (form.ShowDialog() == DialogResult.OK)
                {
                    Designer.Localize();
                    AuthForm.isFirstLoad = true;
                    FRCloudOptions.Instance.ResetBackendHostAndApiKey();
                }
            }
        }

        internal SelectLanguageCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "View|Options..." command.
    /// </summary>
    public class OptionsCommand : DesignerCommand
    {
        /// <inheritdoc/>
        public override void Invoke()
        {
            using (DesignerOptionsForm options = new DesignerOptionsForm(Designer))
            {
                if (options.ShowDialog() == DialogResult.OK)
                {
                    Designer.UpdatePlugins(null);
                }
            }
        }

        internal OptionsCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "View|Start Page" command.
    /// </summary>
    public class ViewStartPageCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return Designer.MdiMode;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            foreach (DocumentWindow c in Designer.Documents)
            {
                if (c is StartPageTab)
                {
                    c.Activate();
                    return;
                }
            }
            Designer.AddStartPageTab();
        }

        internal ViewStartPageCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Select polygon move" command.
    /// </summary>
    public class PolygonSelectModeCommand : DesignerCommand
    {
        private PolyLineObject.PolygonSelectionMode mode;

        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return (Designer.SelectedObjects.Count == 1) && (Designer.SelectedObjects[0] is PolyLineObject);
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            if ((Designer.SelectedObjects.Count == 1) && (Designer.SelectedObjects[0] is PolyLineObject))
            {
                PolyLineObject plobj = (Designer.SelectedObjects[0] as PolyLineObject);
                plobj.SelectionMode = mode;
                Designer.Refresh();
            }
        }

        internal PolygonSelectModeCommand(Designer designer, PolyLineObject.PolygonSelectionMode mode)
          : base(designer)
        {
            this.mode = mode;
        }
    }

    /// <summary>
    /// Represents the "Report|Styles..." command.
    /// </summary>
    public class ReportStylesCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return !Restrictions.DontChangeReportOptions && ActiveReport != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            if (ActiveReport == null)
                return;
            using (StyleEditorForm form = new StyleEditorForm(ActiveReport))
            {
                if (form.ShowDialog() == DialogResult.OK)
                    SetModified("ChangeReport");
            }
        }

        internal ReportStylesCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Report|Validation" command.
    /// </summary>
    public class ReportValidationCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return ActiveReport != null;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            if (ActiveReport == null)
                return;

            List<ValidationError> errors = Validator.ValidateReport(ActiveReport);
            Designer.MessagesWindow.ClearMessages();
            foreach (ValidationError error in errors)
            {
                Designer.MessagesWindow.AddMessage(error.Name + ": " + error.Message, error.Name, error.Level == ValidationError.ErrorLevel.Error);
            }
            Designer.MessagesWindow.Show();
        }

        internal ReportValidationCommand(Designer designer) : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Help|Account" command.
    /// </summary>
    public class AccountCommand : DesignerCommand
    {

        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return Auth.AuthService.Instance.IsEnable;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            using (Auth.AuthForm authForm = new Auth.AuthForm())
            {
                authForm.ShowDialog();
            }
        }

        internal AccountCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Help|Help Contents..." command.
    /// </summary>
    public class HelpContentsCommand : DesignerCommand
    {
        private string GetHelpUrl()
        {
            string url = "https://www.fast-report.com/public_download/docs/FRNet/online/en/index.html";
            if (CultureInfo.CurrentCulture.Name == "ru-RU")
            {
                url = "https://быстрыеотчеты.рф/public_download/docs/FRNet/online/ru/index.html";
            }
            return url;
        }

        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return true;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
            ProcessHelper.StartProcess(GetHelpUrl());
        }

        internal HelpContentsCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Help|About..." command.
    /// </summary>
    public class AboutCommand : DesignerCommand
    {
        /// <inheritdoc/>
        public override void Invoke()
        {
            using (AboutForm form = new AboutForm())
            {
                form.ShowDialog();
            }
        }

        internal AboutCommand(Designer designer)
          : base(designer)
        {
        }
    }

    /// <summary>
    /// Represents the "Show welcome window..." command.
    /// </summary>
    public class WelcomeCommand : DesignerCommand
    {
        /// <inheritdoc/>
        protected override bool GetEnabled()
        {
            return Config.WelcomeEnabled;
        }

        /// <inheritdoc/>
        public override void Invoke()
        {
#if !(WPF || AVALONIA)
            using (WelcomeForm form = new WelcomeForm(Designer))
            {
                form.ShowDialog();
            }
#endif
        }

        internal WelcomeCommand(Designer designer)
          : base(designer)
        {
        }
    }
}