#region Disclaimer / License
// Copyright (C) 2011, Jackie Ng
// http://trac.osgeo.org/mapguide/wiki/maestro, jumpinjackie@gmail.com
// 
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
// 
#endregion
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using OSGeo.MapGuide.ObjectModels.LayerDefinition;
using Maestro.Editors.SymbolDefinition;
using Maestro.Editors.Generic;
using OSGeo.MapGuide.MaestroAPI;
using OSGeo.MapGuide.ObjectModels.SymbolDefinition;
using Maestro.Editors.LayerDefinition.Vector.Scales.SymbolInstanceEditors;
using OSGeo.MapGuide.MaestroAPI.Schema;
using OSGeo.MapGuide.ObjectModels;
using OSGeo.MapGuide.MaestroAPI.Services;
using Maestro.Shared.UI;

namespace Maestro.Editors.LayerDefinition.Vector.Scales
{
    internal partial class SymbolInstancesDialog : Form
    {
        private IEditorService _edSvc;
        private ICompositeSymbolization _comp;

        private ClassDefinition _cls;
        private string _provider;
        private string _featureSourceId;

        private IMappingService _mappingSvc;
        private ILayerStylePreviewable _preview;

        public SymbolInstancesDialog(IEditorService edSvc, ICompositeSymbolization comp, ClassDefinition cls, string provider, string featureSourceId, ILayerStylePreviewable prev)
        {
            InitializeComponent();
            _edSvc = edSvc;
            _comp = comp;

            _cls = cls;
            _provider = provider;
            _featureSourceId = featureSourceId;

            _preview = prev;
            var conn = edSvc.GetEditedResource().CurrentConnection;
            if (Array.IndexOf(conn.Capabilities.SupportedServices, (int)ServiceType.Mapping) >= 0)
            {
                _mappingSvc = (IMappingService)conn.GetService((int)ServiceType.Mapping);
            }

            foreach (var inst in _comp.SymbolInstance)
                AddInstance(inst, false);
        }

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);
            UpdatePreviewImage();
        }

        public bool UseLayerIconPreview
        {
            get { return _mappingSvc != null && _preview != null; }
        }

        private void UpdatePreviewImage()
        {
            using (new WaitCursor(this))
            {
                _edSvc.SyncSessionCopy();
                _previewImg = _mappingSvc.GetLegendImage(_preview.Scale, _preview.LayerDefinition, _preview.ThemeCategory, 4, symPreview.Width, symPreview.Height, _preview.ImageFormat);
                symPreview.Invalidate();
            }
        }

        private Image _previewImg = null;

        private void previewPicture_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
        {
            if (UseLayerIconPreview)
            {
                if (_previewImg != null)
                {
                    e.Graphics.DrawImage(_previewImg, new Point(0, 0));
                }
            }
            else 
            {
                e.Graphics.DrawString(Strings.TextRenderPreviewNotAvailable, Control.DefaultFont, Brushes.Black, new PointF(0, 0));
            }
        }

        private void btnClose_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void AddInstance(ISymbolInstance symRef, bool add)
        {
            var li = new ListViewItem();
            li.ImageIndex = (symRef.Reference.Type == SymbolInstanceType.Reference) ? 0 : 1;
            li.Tag = symRef;
            if (li.ImageIndex == 0)
                li.Text = ((ISymbolInstanceReferenceLibrary)symRef.Reference).ResourceId;
            else
                li.Text = Strings.InlineSymbolDefinition;

            lstInstances.Items.Add(li);
            if (add)
                _comp.AddSymbolInstance(symRef);
            li.Selected = (lstInstances.Items.Count == 1);
        }

        private void referenceToolStripMenuItem_Click(object sender, EventArgs e)
        {
            splitContainer1.Panel2.Controls.Clear();
            using (var picker = new ResourcePicker(_edSvc.ResourceService, ResourceTypes.SymbolDefinition, ResourcePickerMode.OpenResource))
            {
                if (picker.ShowDialog() == DialogResult.OK)
                {
                    LastSelectedFolder.FolderId = picker.SelectedFolder;
                    var symRef = _comp.CreateSymbolReference(picker.ResourceID);
                    AddInstance(symRef, true);
                }
            }
        }

        private void inlineSimpleSymbolToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var res = (ILayerDefinition)_edSvc.GetEditedResource();
            var vl = (IVectorLayerDefinition)res.SubLayer;
            if (vl.SymbolDefinitionVersion == null)
                throw new InvalidOperationException(Strings.ErrorLayerDefnitionDoesNotSupportCompositeSymbolization);
            var ssym = ObjectFactory.CreateSimpleSymbol(_edSvc.GetEditedResource().CurrentConnection, 
                                                        vl.SymbolDefinitionVersion, 
                                                        "InlineSimpleSymbol", //NOXLATE
                                                        Strings.TextInlineSimpleSymbol);

            var instance = _comp.CreateInlineSimpleSymbol(ssym);
            AddInstance(instance, true);
        }

        private void inlineCompoundSymbolToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var res = (ILayerDefinition)_edSvc.GetEditedResource();
            var vl = (IVectorLayerDefinition)res.SubLayer;
            if (vl.SymbolDefinitionVersion == null)
                throw new InvalidOperationException(Strings.ErrorLayerDefnitionDoesNotSupportCompositeSymbolization);
            var csym = ObjectFactory.CreateCompoundSymbol(_edSvc.GetEditedResource().CurrentConnection,
                                                          vl.SymbolDefinitionVersion,
                                                          "InlineCompoundSymbol",
                                                          Strings.TextInlineCompoundSymbol); //NOXLATE

            var instance = _comp.CreateInlineCompoundSymbol(csym);
            AddInstance(instance, true);
        }

        private void btnDelete_Click(object sender, EventArgs e)
        {
            if (lstInstances.SelectedItems.Count == 1)
            {
                var it = lstInstances.SelectedItems[0];
                ISymbolInstance symRef = (ISymbolInstance)it.Tag;
                _comp.RemoveSymbolInstance(symRef);
                lstInstances.Items.Remove(it);
            }
        }

        private void lstInstances_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (lstInstances.SelectedItems.Count == 1)
            {
                var it = lstInstances.SelectedItems[0];
                ISymbolInstance symRef = (ISymbolInstance)it.Tag;
                var c = new SymbolInstanceSettingsCtrl();
                c.SetContent(symRef, _edSvc, _cls, _provider, _featureSourceId);
                c.Dock = DockStyle.Fill;
                splitContainer1.Panel2.Controls.Clear();
                splitContainer1.Panel2.Controls.Add(c);
                btnEditInstanceProperties.Enabled = true;
            }
            else
            {
                btnEditInstanceProperties.Enabled = false;
            }
        }

        private void btnRefresh_Click(object sender, EventArgs e)
        {
            UpdatePreviewImage();
        }

        private void btnEditInstanceProperties_Click(object sender, EventArgs e)
        {
            if (lstInstances.SelectedItems.Count == 1)
            {
                var it = lstInstances.SelectedItems[0];
                ISymbolInstance symRef = (ISymbolInstance)it.Tag;

                using (var diag = new SymbolInstancePropertiesDialog(symRef, _edSvc, _cls, _featureSourceId, _provider))
                {
                    diag.ShowDialog();
                }
            }
        }
    }
}