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493 lines
21 KiB
C#
493 lines
21 KiB
C#
/* Copyright (c) Citrix Systems Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using System.Windows.Forms;
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using XenAdmin.Controls;
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using XenAdmin.Model;
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using XenAPI;
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using XenAdmin.XenSearch;
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using XenAdmin.Core;
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using System.Drawing;
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namespace XenAdmin
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{
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internal class MainWindowTreeBuilder
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{
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private readonly FlickerFreeTreeView _treeView;
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private readonly Color _treeViewForeColor;
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private readonly Color _treeViewBackColor;
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private object _highlightedDragTarget;
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private string _lastSearchText = string.Empty;
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private TreeSearchBox.Mode _lastSearchMode;
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private readonly List<VirtualTreeNode.PersistenceInfo> _serverViewExpandedTags = new List<VirtualTreeNode.PersistenceInfo>();
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private readonly List<VirtualTreeNode.PersistenceInfo> _orgViewExpandedTags = new List<VirtualTreeNode.PersistenceInfo>();
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private bool _rootExpanded;
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public MainWindowTreeBuilder(FlickerFreeTreeView treeView)
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{
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Util.ThrowIfParameterNull(treeView, "treeView");
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Program.AssertOnEventThread();
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_treeView = treeView;
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_treeViewForeColor = treeView.ForeColor;
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_treeViewBackColor = treeView.BackColor;
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SetDefaultOrgViewExpandedNodes();
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}
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/// <summary>
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/// Sets up the default expanded nodes for org view. These are Folders, Tags, Types, Custom Fields.
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/// </summary>
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private void SetDefaultOrgViewExpandedNodes()
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{
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VirtualTreeNode dummyRootNode = new VirtualTreeNode("XenCenter");
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OrganizationalView.PopulateOrganizationalView(new MainWindowTreeNodeGroupAcceptor(null, _treeViewForeColor, _treeViewBackColor, dummyRootNode), TreeSearch.DefaultTreeSearch);
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foreach (VirtualTreeNode n in dummyRootNode.Nodes)
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{
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_orgViewExpandedTags.Add(n.GetPersistenceInfo());
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}
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}
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/// <summary>
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/// Gets or sets an object that should be highlighted.
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/// </summary>
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public object HighlightedDragTarget
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{
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get { return _highlightedDragTarget; }
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set { _highlightedDragTarget = value; }
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}
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/// <summary>
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/// Updates the <see cref="TreeView"/> with the specified new root node. This is done by merging the specified
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/// root node with the existing root node to minimize updates to the treeview to reduce flicker.
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/// </summary>
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/// <param name="newRootNode">The new root node.</param>
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/// <param name="searchText">The search text for the currently active search.</param>
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public void RefreshTreeView(VirtualTreeNode newRootNode, string searchText, TreeSearchBox.Mode searchMode)
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{
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Util.ThrowIfParameterNull(newRootNode, "newRootNode");
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Util.ThrowIfParameterNull(searchText, "searchText");
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Program.AssertOnEventThread();
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_treeView.BeginUpdate();
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PersistExpandedNodes(searchText);
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_treeView.UpdateRootNodes(new[] { newRootNode });
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RestoreExpandedNodes(searchText, searchMode);
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bool searchTextCleared = (searchText.Length == 0 && searchText != _lastSearchText);
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_lastSearchText = searchText;
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_lastSearchMode = searchMode;
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_treeView.EndUpdate();
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// ensure that the selected nodes are visible when search text is cleared (CA-102127)
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if (searchTextCleared)
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{
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ExpandSelection();
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}
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}
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internal void ExpandSelection()
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{
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foreach (var node in _treeView.SelectedNodes)
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{
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node.EnsureVisible();
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}
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}
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public VirtualTreeNode CreateNewRootNode(Search search, bool organizationalMode)
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{
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if (!organizationalMode)
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{
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Util.ThrowIfParameterNull(search, "search");
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}
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VirtualTreeNode newRootNode = new VirtualTreeNode("XenCenter");
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MainWindowTreeNodeGroupAcceptor groupAcceptor = new MainWindowTreeNodeGroupAcceptor(_highlightedDragTarget, _treeViewForeColor, _treeViewBackColor, newRootNode);
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if (organizationalMode)
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{
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OrganizationalView.PopulateOrganizationalView(groupAcceptor, search);
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}
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else
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{
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search.PopulateAdapters(groupAcceptor);
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}
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return newRootNode;
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}
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private void PersistExpandedNodes(string searchText)
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{
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// only persist the expansion state of nodes if there isn't an active search. If there's a search then
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// we're just going to expand everything later.
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// also because we want to restore the nodes back to their original state after a search is removed, do the check on _lastSearchText and _lastSearchMode.
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if (searchText.Length == 0 && _lastSearchText.Length == 0 && _lastSearchMode != TreeSearchBox.Mode.SavedSearch)
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{
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var list = _lastSearchMode == TreeSearchBox.Mode.OrgView ? _orgViewExpandedTags : _serverViewExpandedTags;
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list.Clear();
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foreach (VirtualTreeNode node in _treeView.AllNodes)
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{
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if (node.Tag != null && node.IsExpanded)
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{
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list.Add(node.GetPersistenceInfo());
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}
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}
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}
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// persist the expansion state of the root node separately - it's a special case as its
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// expansion state isn't persisted differently depending on whether it's in org mode or not.
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_rootExpanded = _treeView.Nodes[0].IsExpanded || _treeView.Nodes[0].Nodes.Count == 0;
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}
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private void RestoreExpandedNodes(string searchText, TreeSearchBox.Mode searchMode)
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{
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if ((searchText != _lastSearchText && searchText.Length > 0) || (searchMode == TreeSearchBox.Mode.SavedSearch && _lastSearchMode != TreeSearchBox.Mode.SavedSearch))
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{
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// expand all nodes if there's a search and the search has changed.
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_treeView.ExpandAll();
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}
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if (searchText.Length == 0 && searchMode != TreeSearchBox.Mode.SavedSearch)
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{
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// if there isn't a search persist the user's expanded nodes.
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var list = new List<VirtualTreeNode.PersistenceInfo>(searchMode == TreeSearchBox.Mode.OrgView ? _orgViewExpandedTags : _serverViewExpandedTags);
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var allNodes = new List<VirtualTreeNode>(_treeView.AllNodes);
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foreach (VirtualTreeNode.PersistenceInfo info in list)
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{
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VirtualTreeNode match;
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// First, look for the object in the same position
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if (_treeView.TryExactMatch(info.Path, out match) >= info.Path.Count)
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{
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if (!match.IsExpanded)
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{
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match.Expand();
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}
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allNodes.Remove(match);
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continue;
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}
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// Second, find the object in the maximal sub tree where it appeared only once
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if (_treeView.TryExactMatch(info.PathToMaximalSubTree, out match) >= info.PathToMaximalSubTree.Count)
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{
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match = _treeView.FindNodeIn(match, info.Tag);
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if (match != null)
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{
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if (!match.IsExpanded)
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{
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match.Expand();
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}
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allNodes.Remove(match);
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}
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}
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}
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// collapse everything else
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foreach (VirtualTreeNode n in allNodes)
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{
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if (n.Tag != null && n.IsExpanded)
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{
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n.Collapse();
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}
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}
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// special case for root node
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if (_rootExpanded)
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{
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_treeView.Nodes[0].Expand();
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}
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}
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}
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#region MainWindowTreeNodeGroupAcceptor class
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private class MainWindowTreeNodeGroupAcceptor : IAcceptGroups
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{
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private readonly VirtualTreeNode _parent;
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private readonly Color _treeViewForeColor;
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private readonly Color _treeViewBackColor;
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private readonly object _highlightedDragTarget;
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private int _index;
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public MainWindowTreeNodeGroupAcceptor(object highlightedDragTarget, Color treeViewForeColor, Color treeViewBackColor, VirtualTreeNode parent)
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{
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_parent = parent;
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_treeViewForeColor = treeViewForeColor;
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_treeViewBackColor = treeViewBackColor;
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_highlightedDragTarget = highlightedDragTarget;
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}
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#region IAcceptGroups Members
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public void FinishedInThisGroup(bool defaultExpand)
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{
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}
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public IAcceptGroups Add(Grouping grouping, Object group, int indent)
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{
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if (group != null)
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{
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VirtualTreeNode node;
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if (group is Pool)
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{
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node = AddPoolNode(_parent, _index, (Pool)group);
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}
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else if (group is Host)
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{
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node = AddHostNode(_parent, _index, (Host)group);
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}
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else if (group is VM)
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{
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node = AddVMNode(_parent, _index, (VM)group);
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}
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else if (group is VM_appliance)
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{
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node = AddVmApplianceNode(_parent, _index, (VM_appliance)group);
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}
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else if (group is SR)
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{
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node = AddSRNode(_parent, _index, (SR)group);
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}
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else if (group is XenAPI.Network)
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{
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node = AddNetworkNode(_parent, _index, (XenAPI.Network)group);
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}
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else if (group is VDI)
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{
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node = AddVDINode(_parent, _index, (VDI)group);
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}
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else if (group is Folder)
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{
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node = AddFolderNode(_parent, _index, (Folder)group);
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}
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else if (group is StorageLinkServer)
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{
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node = AddStorageLinkServerNode(_parent, _index, (StorageLinkServer)group);
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}
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else if (group is StorageLinkSystem)
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{
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node = AddStorageLinkSystemNode(_parent, _index, (StorageLinkSystem)group);
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}
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else if (group is StorageLinkPool)
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{
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node = AddStorageLinkPoolNode(_parent, _index, (StorageLinkPool)group);
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}
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else if (group is StorageLinkVolume)
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{
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node = AddStorageLinkVolumeNode(_parent, _index, (StorageLinkVolume)group);
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}
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else if (group is StorageLinkRepository)
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{
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node = AddStorageLinkRepositoryNode(_parent, _index, (StorageLinkRepository)group);
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}
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else
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{
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node = AddNode(_parent, _index, grouping.GetGroupName(group), grouping.GetGroupIcon(group), false, new GroupingTag(grouping, FindGroupingParent(_parent.Tag), group));
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if (group is DateTime)
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Program.BeginInvoke(Program.MainWindow, () => { node.Text = HelpersGUI.DateTimeToString((DateTime)group, Messages.DATEFORMAT_DMY_HMS, true); }); // annoying: has to be on the event thread because of CA-46983
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}
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_index++;
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return new MainWindowTreeNodeGroupAcceptor(_highlightedDragTarget, _treeViewForeColor, _treeViewBackColor, node);
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}
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return null;
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}
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#endregion
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private static object FindGroupingParent(object parentTag)
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{
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if (parentTag is GroupingTag)
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{
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GroupingTag gt = (GroupingTag)parentTag;
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// gt.Grouping is OrganizationalView means that we're at the Tags/Types/Custom Fields level.
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// Custom field keys are the next level down, and values are the one after that.
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return gt.Grouping is OrganizationalView ? null : gt.Group;
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}
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else
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{
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return parentTag;
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}
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}
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private VirtualTreeNode AddStorageLinkServerNode(VirtualTreeNode parent, int index, StorageLinkServer storageLinkServer)
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{
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return AddNode(parent, index, storageLinkServer.Name, Images.GetIconFor(storageLinkServer), false, storageLinkServer);
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}
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private VirtualTreeNode AddStorageLinkSystemNode(VirtualTreeNode parent, int index, StorageLinkSystem storageLinkSystem)
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{
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return AddNode(parent, index, Helpers.GetName(storageLinkSystem), Images.GetIconFor(storageLinkSystem), false, storageLinkSystem);
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}
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private VirtualTreeNode AddStorageLinkPoolNode(VirtualTreeNode parent, int index, StorageLinkPool storageLinkPool)
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{
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return AddNode(parent, index, Helpers.GetName(storageLinkPool), Images.GetIconFor(storageLinkPool), false, storageLinkPool);
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}
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private VirtualTreeNode AddStorageLinkVolumeNode(VirtualTreeNode parent, int index, StorageLinkVolume storageLinkVolume)
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{
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string name = storageLinkVolume.FriendlyName;
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VDI vdi = storageLinkVolume.VDI(ConnectionsManager.XenConnectionsCopy);
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if (vdi != null)
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{
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name = string.Format("{0} ({1})", vdi.Name, name);
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}
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return AddNode(parent, index, name, Images.GetIconFor(storageLinkVolume), false, storageLinkVolume);
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}
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private VirtualTreeNode AddStorageLinkRepositoryNode(VirtualTreeNode parent, int index, StorageLinkRepository storageLinkRepository)
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{
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string name = storageLinkRepository.Name;
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StorageLinkPool pool = storageLinkRepository.StorageLinkPool;
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if (pool != null && !string.IsNullOrEmpty(pool.ParentStorageLinkPoolId))
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{
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name = string.Format("{0} ({1})", storageLinkRepository.Name, pool);
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}
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return AddNode(parent, index, name, Images.GetIconFor(storageLinkRepository), false, storageLinkRepository);
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}
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private VirtualTreeNode AddPoolNode(VirtualTreeNode parent, int index, Pool pool)
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{
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return AddNode(parent, index, Helpers.GetName(pool), Images.GetIconFor(pool), false, pool);
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}
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private VirtualTreeNode AddVMNode(VirtualTreeNode parent, int index, VM vm)
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{
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bool hidden = vm.IsHidden;
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string name = hidden ? String.Format(Messages.X_HIDDEN, vm.Name) : vm.Name;
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return AddNode(parent, index, name, Images.GetIconFor(vm), hidden, vm);
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}
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private VirtualTreeNode AddVmApplianceNode(VirtualTreeNode parent, int index, VM_appliance appliance)
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{
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return AddNode(parent, index, appliance.Name, Images.GetIconFor(appliance), false, appliance);
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}
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private VirtualTreeNode AddHostNode(VirtualTreeNode parent, int index, Host host)
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{
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return AddNode(parent, index, host.Name, Images.GetIconFor(host), false, host);
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}
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private VirtualTreeNode AddSRNode(VirtualTreeNode parent, int index, SR sr)
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{
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bool hidden = sr.IsHidden;
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String name = hidden ? String.Format(Messages.X_HIDDEN, sr.NameWithoutHost) : sr.NameWithoutHost;
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return AddNode(parent, index, name, Images.GetIconFor(sr), hidden, sr);
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}
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private VirtualTreeNode AddNetworkNode(VirtualTreeNode parent, int index, XenAPI.Network network)
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{
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bool hidden = network.IsHidden;
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bool slave = network.IsSlave;
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string rawName = network.Name;
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String name = slave ? String.Format(Messages.NIC_SLAVE, rawName) :
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hidden ? String.Format(Messages.X_HIDDEN, rawName) :
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rawName;
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return AddNode(parent, index, name, Images.GetIconFor(network), slave || hidden, network);
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}
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private VirtualTreeNode AddVDINode(VirtualTreeNode parent, int index, VDI vdi)
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{
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String name = String.IsNullOrEmpty(vdi.Name) ? Messages.NO_NAME : vdi.Name;
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return AddNode(parent, index, name, Images.GetIconFor(vdi), false, vdi);
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}
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private VirtualTreeNode AddFolderNode(VirtualTreeNode parent, int index, Folder folder)
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{
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return AddNode(parent, index, folder.Name, Images.GetIconFor(folder), false, folder);
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}
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private VirtualTreeNode AddNode(VirtualTreeNode parent, int index, string name, Icons icon, bool grayed, object obj)
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{
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VirtualTreeNode result = new VirtualTreeNode(name.Ellipsise(1000));
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IXenObject xenObject = obj as IXenObject;
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result.Tag = obj;
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parent.Nodes.Insert(index, result);
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result.ImageIndex = (int)icon;
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result.SelectedImageIndex = (int)icon;
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bool error = xenObject != null && xenObject.InError;
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bool highlighted = _highlightedDragTarget != null && obj != null && _highlightedDragTarget.Equals(obj);
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if (highlighted)
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{
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result.BackColor = SystemColors.Highlight;
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result.ForeColor = SystemColors.HighlightText;
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result.NodeFont = Program.DefaultFont;
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}
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else if (error)
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{
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result.BackColor = Program.ErrorBackColor;
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result.ForeColor = Program.ErrorForeColor;
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result.NodeFont = Program.DefaultFont;
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}
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else if (grayed)
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{
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result.BackColor = _treeViewBackColor;
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result.ForeColor = SystemColors.GrayText;
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result.NodeFont = Program.DefaultFont;
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}
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else
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{
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result.BackColor = _treeViewBackColor;
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result.ForeColor = _treeViewForeColor;
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result.NodeFont = Program.DefaultFont;
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}
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return result;
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}
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}
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#endregion
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}
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}
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