using System;
using System.Drawing;
using System.Windows.Forms;
using FastReport.Utils;
using FastReport.Design;

namespace FastReport.Forms
{
    internal partial class ConfigureBandsForm : BaseDialogForm
    {
        private Designer designer;
        private ReportPage page;
        private BandBase lastSelectedBand;

        public ReportPage Page
        {
            get { return page; }
            set
            {
                page = value;
                UpdateBands();
            }
        }

        private TreeNodeCollection AddBand(BandBase band, TreeNodeCollection nodes)
        {
            if (band != null)
            {
                ObjectInfo info = RegisteredObjects.FindObject(band);
                string infoText = Res.Get(info.Text);
                infoText += ": " + band.Name;
                if (band is DataBand || band is GroupHeaderBand)
                {
                    if (!String.IsNullOrEmpty(band.GetInfoText()))
                        infoText += " (" + band.GetInfoText() + ")";
                }
                TreeNode node = nodes.Add(infoText);
                int imageIndex = info.ImageIndex;
                node.ImageIndex = imageIndex;
                node.SelectedImageIndex = imageIndex;
                node.Tag = band;
                if (band == lastSelectedBand)
                    tvBands.SelectedNode = node;
                AddBand(band.Child, node.Nodes);
                return node.Nodes;
            }
            return null;
        }

        private void EnumDataBand(DataBand band, TreeNodeCollection nodes)
        {
            if (band == null)
                return;
            AddBand(band.Header, nodes);
            TreeNodeCollection dataNodes = AddBand(band, nodes);
            foreach (BandBase b in band.Bands)
            {
                EnumBand(b, dataNodes);
            }
            AddBand(band.Footer, nodes);
        }

        private void EnumGroupHeaderBand(GroupHeaderBand band, TreeNodeCollection nodes)
        {
            if (band == null)
                return;
            AddBand(band.Header, nodes);
            TreeNodeCollection groupNodes = AddBand(band, nodes);
            EnumGroupHeaderBand(band.NestedGroup, groupNodes);
            EnumDataBand(band.Data, groupNodes);
            AddBand(band.GroupFooter, nodes);
            AddBand(band.Footer, nodes);
        }

        private void EnumBand(BandBase band, TreeNodeCollection nodes)
        {
            if (band is DataBand)
                EnumDataBand(band as DataBand, nodes);
            else if (band is GroupHeaderBand)
                EnumGroupHeaderBand(band as GroupHeaderBand, nodes);
        }

        private void EnumBands(TreeNodeCollection nodes)
        {
            if (Page.TitleBeforeHeader)
            {
                AddBand(Page.ReportTitle, nodes);
                AddBand(Page.PageHeader, nodes);
            }
            else
            {
                AddBand(Page.PageHeader, nodes);
                AddBand(Page.ReportTitle, nodes);
            }
            AddBand(Page.ColumnHeader, nodes);
            foreach (BandBase b in Page.Bands)
            {
                EnumBand(b, nodes);
            }
            AddBand(Page.ColumnFooter, nodes);
            AddBand(Page.ReportSummary, nodes);
            AddBand(Page.PageFooter, nodes);
            AddBand(Page.Overlay, nodes);
        }

        private void SetDefaults(BandBase band)
        {
            band.CreateUniqueName();
            band.Height = band.GetPreferredSize().Height;
        }

        private void Change()
        {
            UpdateBands();
            UpdateControls();
            designer.SetModified(null, "ChangeReport");
        }

        private void btnAdd_Click(object sender, EventArgs e)
        {
            miDelete.Visible = false;
            sep1.Visible = false;
            mnuBands.Show(btnAdd.PointToScreen(new Point(0, btnAdd.Height)));
        }

        private void btnDelete_Click(object sender, EventArgs e)
        {
            BandBase band = tvBands.SelectedNode.Tag as BandBase;
            band.Delete();
            tvBands.SelectedNode = tvBands.SelectedNode.NextVisibleNode;
            Change();
        }

        private void btnUp_Click(object sender, EventArgs e)
        {
            BandBase band = tvBands.SelectedNode.Tag as BandBase;
            if (band.Parent == Page || band is DataBand)
                band.ZOrder--;
            else if (band is ChildBand && band.Parent is ChildBand)
            {
                ChildBand parent = band.Parent as ChildBand;
                BandBase newParent = parent.Parent as BandBase;
                parent.Parent = null;
                band.Parent = newParent;
                parent.Child = band.Child;
                band.Child = parent;
            }
            else if (band is GroupHeaderBand && band.Parent is GroupHeaderBand)
            {
                GroupHeaderBand group = band as GroupHeaderBand;
                GroupHeaderBand parent = band.Parent as GroupHeaderBand;
                Base newParent = parent.Parent;
                BandBase child = null;
                if (group.Data != null)
                    child = group.Data;
                else
                    child = group.NestedGroup;
                int zOrder = parent.ZOrder;
                parent.Parent = null;
                group.Parent = newParent;
                group.ZOrder = zOrder;
                child.Parent = parent;
                parent.Parent = group;
            }
            Change();
        }

        private void btnDown_Click(object sender, EventArgs e)
        {
            BandBase band = tvBands.SelectedNode.Tag as BandBase;
            if (band.Parent == Page || band is DataBand)
                band.ZOrder += 2;
            else if (band is ChildBand && band.Child != null)
            {
                BandBase parent = band.Parent as BandBase;
                ChildBand child = band.Child;
                band.Parent = null;
                child.Parent = parent;
                band.Child = child.Child;
                band.Parent = child;
            }
            else if (band is GroupHeaderBand && (band as GroupHeaderBand).NestedGroup != null)
            {
                GroupHeaderBand group = band as GroupHeaderBand;
                Base parent = band.Parent;
                GroupHeaderBand child = group.NestedGroup;
                int zOrder = group.ZOrder;
                group.Parent = null;
                child.Parent = parent;
                child.ZOrder = zOrder;
                if (child.Data != null)
                    group.Data = child.Data;
                else
                    group.NestedGroup = child.NestedGroup;
                group.Parent = child;
            }
            Change();
        }

        private void tvBands_AfterSelect(object sender, TreeViewEventArgs e)
        {
            UpdateControls();
        }

        private void tvBands_MouseDown(object sender, MouseEventArgs e)
        {
            tvBands.SelectedNode = tvBands.GetNodeAt(e.Location);
            UpdateControls();
        }

        private void tvBands_MouseUp(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Right)
            {
                miDelete.Visible = true;
                sep1.Visible = true;
                mnuBands.Show(tvBands.PointToScreen(e.Location));
            }
        }

        private void miPageHeader_Click(object sender, EventArgs e)
        {
            Page.PageHeader = new PageHeaderBand();
            SetDefaults(Page.PageHeader);
            Change();
        }

        private void miReportTitle_Click(object sender, EventArgs e)
        {
            Page.ReportTitle = new ReportTitleBand();
            SetDefaults(Page.ReportTitle);
            Change();
        }

        private void miColumnHeader_Click(object sender, EventArgs e)
        {
            Page.ColumnHeader = new ColumnHeaderBand();
            SetDefaults(Page.ColumnHeader);
            Change();
        }

        private void miDataHeader_Click(object sender, EventArgs e)
        {
            if (tvBands.SelectedNode.Tag is DataBand)
            {
                DataBand data = tvBands.SelectedNode.Tag as DataBand;
                data.Header = new DataHeaderBand();
                SetDefaults(data.Header);
            }
            else if (tvBands.SelectedNode.Tag is GroupHeaderBand)
            {
                GroupHeaderBand group = tvBands.SelectedNode.Tag as GroupHeaderBand;
                group.Header = new DataHeaderBand();
                SetDefaults(group.Header);
            }
            Change();
        }

        private void miData_Click(object sender, EventArgs e)
        {
            BandBase band = tvBands.SelectedNode != null ? tvBands.SelectedNode.Tag as BandBase : null;
            DataBand newBand = new DataBand();
            if (band is DataBand)
                (band as DataBand).Bands.Add(newBand);
            else
                Page.Bands.Add(newBand);
            SetDefaults(newBand);
            Change();
        }

        private void miGroup_Click(object sender, EventArgs e)
        {
            BandBase band = tvBands.SelectedNode != null ? tvBands.SelectedNode.Tag as BandBase : null;
            GroupHeaderBand group = new GroupHeaderBand();

            // if we select something other than databand or a group, add a group to the first page databand.
            if (!(band is DataBand) && !(band is GroupHeaderBand))
            {
                foreach (BandBase b in Page.Bands)
                {
                    if (b is DataBand)
                    {
                        band = b;
                        break;
                    }
                }
            }

            if (band is GroupHeaderBand)
            {
                GroupHeaderBand parent = band as GroupHeaderBand;
                if (parent.Data != null)
                {
                    group.Data = parent.Data;
                    parent.NestedGroup = group;
                }
                else if (parent.NestedGroup != null)
                {
                    group.NestedGroup = parent.NestedGroup;
                    parent.NestedGroup = group;
                }
            }
            else if (band is DataBand)
            {
                if (band.Parent is GroupHeaderBand)
                {
                    GroupHeaderBand parent = band.Parent as GroupHeaderBand;
                    group.Data = band as DataBand;
                    parent.NestedGroup = group;
                }
                else
                {
                    int zOrder = band.ZOrder;
                    Base parent = band.Parent;
                    group.Data = band as DataBand;
                    group.Parent = parent;
                    group.ZOrder = zOrder;
                }
            }
            else
            {
                Page.Bands.Add(group);
                group.Data = new DataBand();
                SetDefaults(group.Data);
            }
            SetDefaults(group);
            group.GroupFooter = new GroupFooterBand();
            SetDefaults(group.GroupFooter);
            Change();
        }

        private void miChild_Click(object sender, EventArgs e)
        {
            BandBase band = tvBands.SelectedNode.Tag as BandBase;
            band.Child = new ChildBand();
            SetDefaults(band.Child);
            Change();
        }

        private void miDataFooter_Click(object sender, EventArgs e)
        {
            if (tvBands.SelectedNode.Tag is DataBand)
            {
                DataBand data = tvBands.SelectedNode.Tag as DataBand;
                data.Footer = new DataFooterBand();
                SetDefaults(data.Footer);
            }
            else if (tvBands.SelectedNode.Tag is GroupHeaderBand)
            {
                GroupHeaderBand group = tvBands.SelectedNode.Tag as GroupHeaderBand;
                group.Footer = new DataFooterBand();
                SetDefaults(group.Footer);
            }
            Change();
        }

        private void miGroupFooter_Click(object sender, EventArgs e)
        {
            GroupHeaderBand groupHeader = tvBands.SelectedNode.Tag as GroupHeaderBand;
            groupHeader.GroupFooter = new GroupFooterBand();
            SetDefaults(groupHeader.GroupFooter);
            Change();
        }

        private void miColumnFooter_Click(object sender, EventArgs e)
        {
            Page.ColumnFooter = new ColumnFooterBand();
            SetDefaults(Page.ColumnFooter);
            Change();
        }

        private void miReportSummary_Click(object sender, EventArgs e)
        {
            Page.ReportSummary = new ReportSummaryBand();
            SetDefaults(Page.ReportSummary);
            Change();
        }

        private void miPageFooter_Click(object sender, EventArgs e)
        {
            Page.PageFooter = new PageFooterBand();
            SetDefaults(Page.PageFooter);
            Change();
        }

        private void miOverlay_Click(object sender, EventArgs e)
        {
            Page.Overlay = new OverlayBand();
            SetDefaults(Page.Overlay);
            Change();
        }

        private void UpdateBands()
        {
            lastSelectedBand = tvBands.SelectedNode != null ? tvBands.SelectedNode.Tag as BandBase : null;
            tvBands.BeginUpdate();
            tvBands.Nodes.Clear();
            EnumBands(tvBands.Nodes);
            tvBands.ExpandAll();
            tvBands.EndUpdate();
            if (lastSelectedBand == null && tvBands.Nodes.Count > 0)
                tvBands.SelectedNode = tvBands.Nodes[0];
        }

        private void UpdateControls()
        {
            BandBase selected = tvBands.SelectedNode != null ? tvBands.SelectedNode.Tag as BandBase : null;
            bool isSubreport = Page.Subreport != null;

            miPageHeader.Enabled = Page.PageHeader == null && !isSubreport;
            miReportTitle.Enabled = Page.ReportTitle == null && !isSubreport;
            miColumnHeader.Enabled = Page.ColumnHeader == null && !isSubreport;
            miDataHeader.Enabled = (selected is DataBand && (selected as DataBand).Header == null) ||
              (selected is GroupHeaderBand && (selected as GroupHeaderBand).Header == null);
            miDataFooter.Enabled = (selected is DataBand && (selected as DataBand).Footer == null) ||
              (selected is GroupHeaderBand && (selected as GroupHeaderBand).Footer == null);
            miGroupFooter.Enabled = selected is GroupHeaderBand && (selected as GroupHeaderBand).GroupFooter == null;
            miColumnFooter.Enabled = Page.ColumnFooter == null && !isSubreport;
            miReportSummary.Enabled = Page.ReportSummary == null && !isSubreport;
            miPageFooter.Enabled = Page.PageFooter == null && !isSubreport;
            miChild.Enabled = selected != null && selected.Child == null;
            miOverlay.Enabled = Page.Overlay == null && !isSubreport;

            btnUp.Enabled = selected is GroupHeaderBand || selected is DataBand || selected is ChildBand;
            btnDown.Enabled = btnUp.Enabled;
            btnDelete.Enabled = selected != null && !(selected is DataBand && selected.Parent is GroupHeaderBand);
            miDelete.Enabled = btnDelete.Enabled;

            designer.CancelPaste();
            designer.SelectedObjects.Clear();
            designer.SelectedObjects.Add(selected);
            designer.SelectionChanged(null);
        }

        private void ConfigureBandsForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            Config.SaveFormState(this);
        }

        public override void Localize()
        {
            base.Localize();
            MyRes res = new MyRes("Forms,ConfigureBands");
            MyRes res1 = new MyRes("Objects,Bands");
            Text = res.Get("");
            btnAdd.Text = res.Get("Add");
            btnDelete.Text = res.Get("Delete");
            btnOk.Text = Res.Get("Buttons,Close");

            miDelete.Text = res.Get("Delete");
            miPageHeader.Text = res1.Get("PageHeader");
            miReportTitle.Text = res1.Get("ReportTitle");
            miColumnHeader.Text = res1.Get("ColumnHeader");
            miDataHeader.Text = res1.Get("DataHeader");
            miData.Text = res1.Get("Data");
            miGroup.Text = res1.Get("GroupHeader");
            miDataFooter.Text = res1.Get("DataFooter");
            miGroupFooter.Text = res1.Get("GroupFooter");
            miColumnFooter.Text = res1.Get("ColumnFooter");
            miReportSummary.Text = res1.Get("ReportSummary");
            miPageFooter.Text = res1.Get("PageFooter");
            miChild.Text = res1.Get("Child");
            miOverlay.Text = res1.Get("Overlay");
        }

        public override void UpdateDpiDependencies()
        {
            base.UpdateDpiDependencies();
            tvBands.ImageList = GetImages();
            mnuBands.Font = Font;
            
            miDelete.Image = GetImage(51);
            btnUp.Image = GetImage(208);
            btnDown.Image = GetImage(209);
            miPageHeader.Image = GetImage(156);
            miReportTitle.Image = GetImage(154);
            miColumnHeader.Image = GetImage(158);
            miDataHeader.Image = GetImage(160);
            miData.Image = GetImage(162);
            miGroup.Image = GetImage(163);
            miDataFooter.Image = GetImage(161);
            miGroupFooter.Image = GetImage(164);
            miColumnFooter.Image = GetImage(159);
            miReportSummary.Image = GetImage(155);
            miPageFooter.Image = GetImage(157);
            miChild.Image = GetImage(165);
            miOverlay.Image = GetImage(166);

            MinimumSize = this.LogicalToDevice(new Size(380, 300));
        }

        public ConfigureBandsForm(Designer designer)
        {
            this.designer = designer;
            InitializeComponent();
            Localize();
            mnuBands.Renderer = Config.DesignerSettings.ToolStripRenderer;
            Config.RestoreFormState(this);
            UIUtils.CheckRTL(this);
            UpdateDpiDependencies();
        }

    }
}