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// CompletionListWindow.cs
//
// Author:
// Lluis Sanchez Gual <lluis@novell.com>
//
// Copyright (c) 2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
//
using System;
using System.Collections.Generic;
using Gtk;
using MonoDevelop.Projects;
using MonoDevelop.Core;
using MonoDevelop.Components;
using System.Linq;
namespace MonoDevelop.Ide.CodeCompletion
{
public class CompletionListWindow : ListWindow, IListDataProvider
{
const int declarationWindowMargin = 3;
DeclarationViewWindow declarationviewwindow = new DeclarationViewWindow ();
CompletionData currentData;
Widget parsingMessage;
System.Action closedDelegate;
int initialWordLength;
int previousWidth = -1, previousHeight = -1;
public CodeCompletionContext CodeCompletionContext {
get;
set;
}
public ICompletionWidget CompletionWidget {
get;
set;
}
public int X { get; private set; }
public int Y { get; private set; }
public int InitialWordLength {
get { return this.initialWordLength; }
}
IMutableCompletionDataList mutableList;
ICompletionDataList completionDataList;
public ICompletionDataList CompletionDataList {
get { return this.completionDataList; }
set {
this.completionDataList = value;
}
}
public CompletionListWindow ()
{
SizeAllocated += new SizeAllocatedHandler (ListSizeChanged);
Events = Gdk.EventMask.PropertyChangeMask;
WindowTransparencyDecorator.Attach (this);
DataProvider = this;
HideDeclarationView ();
}
protected override void OnDestroyed ()
{
HideDeclarationView ();
if (declarationviewwindow != null) {
declarationviewwindow.Destroy ();
declarationviewwindow = null;
}
base.OnDestroyed ();
}
public void PostProcessKeyEvent (KeyActions ka)
{
if ((ka & KeyActions.Complete) != 0)
CompleteWord ();
}
public void ToggleCategoryMode ()
{
this.List.InCategoryMode = !this.List.InCategoryMode;
this.ResetSizes ();
this.List.QueueDraw ();
}
public bool PreProcessKeyEvent (Gdk.Key key, char keyChar, Gdk.ModifierType modifier, out KeyActions ka)
{
ka = KeyActions.None;
bool keyHandled = false;
foreach (ICompletionKeyHandler handler in CompletionDataList.KeyHandler) {
if (handler.ProcessKey (this, key, keyChar, modifier, out ka)) {
keyHandled = true;
break;
}
}
if (!keyHandled) {
ka = ProcessKey (key, keyChar, modifier);
}
if ((ka & KeyActions.Complete) != 0) {
bool completed = CompleteWord ();
Console.WriteLine ("completed:" + completed);
if (!completed) {
CompletionWindowManager.HideWindow ();
return false;
}
}
if ((ka & KeyActions.CloseWindow) != 0)
CompletionWindowManager.HideWindow ();
if ((ka & KeyActions.Ignore) != 0)
return true;
if ((ka & KeyActions.Process) != 0) {
if (key == Gdk.Key.Left || key == Gdk.Key.Right) {
// Close if there's a modifier active EXCEPT lock keys and Modifiers
// Makes an exception for Mod1Mask (usually alt), shift, control, meta and super
// This prevents the window from closing if the num/scroll/caps lock are active
// FIXME: modifier mappings depend on X server settings
// if ((modifier & ~(Gdk.ModifierType.LockMask | (Gdk.ModifierType.ModifierMask & ~(Gdk.ModifierType.ShiftMask | Gdk.ModifierType.Mod1Mask | Gdk.ModifierType.ControlMask | Gdk.ModifierType.MetaMask | Gdk.ModifierType.SuperMask)))) != 0) {
// this version doesn't work for my system - seems that I've a modifier active
// that gdk doesn't know about. How about the 2nd version - should close on left/rigt + shift/mod1/control/meta/super
if ((modifier & (Gdk.ModifierType.ShiftMask | Gdk.ModifierType.Mod1Mask | Gdk.ModifierType.ControlMask | Gdk.ModifierType.MetaMask | Gdk.ModifierType.SuperMask)) != 0) {
CompletionWindowManager.HideWindow ();
return false;
}
if (declarationviewwindow.Multiple) {
if (key == Gdk.Key.Left)
declarationviewwindow.OverloadLeft ();
else
declarationviewwindow.OverloadRight ();
UpdateDeclarationView ();
} else {
CompletionWindowManager.HideWindow ();
return false;
}
return true;
}
if (completionDataList != null && completionDataList.CompletionSelectionMode == CompletionSelectionMode.OwnTextField)
return true;
}
return false;
}
public override void SelectEntry (string s)
{
base.SelectEntry (s);
UpdateDeclarationView ();
}
internal bool ShowListWindow (char firstChar, ICompletionDataList list, ICompletionWidget completionWidget, CodeCompletionContext completionContext, System.Action closedDelegate)
{
if (mutableList != null) {
mutableList.Changing -= OnCompletionDataChanging;
mutableList.Changed -= OnCompletionDataChanged;
HideFooter ();
}
//initialWordLength = 0;
this.completionDataList = list;
this.CompleteWithSpaceOrPunctuation = MonoDevelop.Core.PropertyService.Get ("CompleteWithSpaceOrPunctuation", true);
this.CodeCompletionContext = completionContext;
this.closedDelegate = closedDelegate;
mutableList = completionDataList as IMutableCompletionDataList;
List.PreviewCompletionString = completionDataList.CompletionSelectionMode == CompletionSelectionMode.OwnTextField;
if (mutableList != null) {
mutableList.Changing += OnCompletionDataChanging;
mutableList.Changed += OnCompletionDataChanged;
if (mutableList.IsChanging)
OnCompletionDataChanging (null, null);
}
this.CompletionWidget = completionWidget;
if (FillList ()) {
// not neccessarry, because list window is not reused anymore:
// Reset (true);
this.AutoSelect = list.AutoSelect;
this.AutoCompleteEmptyMatch = list.AutoCompleteEmptyMatch;
// makes control-space in midle of words to work
string text = completionWidget.GetCompletionText (completionContext);
DefaultCompletionString = completionDataList.DefaultCompletionString ?? "";
if (text.Length == 0) {
UpdateWordSelection ();
initialWordLength = 0;//completionWidget.SelectedLength;
ResetSizes ();
ShowAll ();
UpdateWordSelection ();
//if there is only one matching result we take it by default
if (completionDataList.AutoCompleteUniqueMatch && IsUniqueMatch && !IsChanging) {
CompleteWord ();
CompletionWindowManager.HideWindow ();
}
return true;
}
initialWordLength = text.Length /*+ completionWidget.SelectedLength*/;
PartialWord = text;
UpdateWordSelection ();
//if there is only one matching result we take it by default
if (completionDataList.AutoCompleteUniqueMatch && IsUniqueMatch && !IsChanging) {
CompleteWord ();
CompletionWindowManager.HideWindow ();
} else {
ResetSizes ();
ShowAll ();
}
return true;
}
CompletionWindowManager.HideWindow ();
return false;
}
class DataItemComparer : IComparer<CompletionData>
{
public int Compare (CompletionData a, CompletionData b)
{
return ((a.DisplayFlags & DisplayFlags.Obsolete) == (b.DisplayFlags & DisplayFlags.Obsolete))
? StringComparer.OrdinalIgnoreCase.Compare (a.DisplayText, b.DisplayText)
: (a.DisplayFlags & DisplayFlags.Obsolete) != 0 ? 1 : -1;
}
}
bool FillList ()
{
if ((completionDataList.Count == 0) && !IsChanging)
return false;
this.Style = CompletionWidget.GtkStyle;
//sort, sinking obsolete items to the bottoms
//the string comparison is ordinal as that makes it an order of magnitude faster, which
//which makes completion triggering noticeably more responsive
if (!completionDataList.IsSorted)
completionDataList.Sort (new DataItemComparer ());
Reposition (true);
return true;
}
enum WindowPositonY {
None,
Top,
Bottom
}
WindowPositonY yPosition;
void Reposition (bool force)
{
X = CodeCompletionContext.TriggerXCoord - TextOffset;
Y = CodeCompletionContext.TriggerYCoord;
int w, h;
GetSize (out w, out h);
if (!force && previousHeight != h && previousWidth != w)
return;
Gdk.Rectangle geometry = Screen.GetMonitorGeometry (Screen.GetMonitorAtPoint (X, Y));
previousHeight = h;
previousWidth = w;
if (X + w > geometry.Right)
X = geometry.Right - w;
if (Y + h > geometry.Bottom || yPosition == WindowPositonY.Top) {
Y = Y - CodeCompletionContext.TriggerTextHeight - h;
yPosition = WindowPositonY.Top;
} else {
yPosition = WindowPositonY.Bottom;
}
curXPos = X;
curYPos = Y;
Move (X, Y);
UpdateDeclarationView ();
ParameterInformationWindowManager.UpdateWindow ();
}
//smaller lists get size reallocated after FillList, so we have to reposition them
//if the window size has changed since we last positioned it
protected override void OnSizeAllocated (Gdk.Rectangle allocation)
{
base.OnSizeAllocated (allocation);
Reposition (true);
}
public bool CompleteWord ()
{
if (SelectionIndex == -1 || completionDataList == null)
return false;
CompletionData item = completionDataList[SelectionIndex];
if (item == null)
return false;
if (item.CompletionText == CompletionData.GetCurrentWord (this)) {
AddWordToHistory (item.CompletionText);
OnWordCompleted (new CodeCompletionContextEventArgs (CompletionWidget, CodeCompletionContext, item.CompletionText));
return false;
}
item.InsertCompletionText (this);
AddWordToHistory (item.CompletionText);
OnWordCompleted (new CodeCompletionContextEventArgs (CompletionWidget, CodeCompletionContext, item.CompletionText));
return true;
}
protected virtual void OnWordCompleted (CodeCompletionContextEventArgs e)
{
EventHandler<CodeCompletionContextEventArgs> handler = this.WordCompleted;
if (handler != null)
handler (this, e);
}
public event EventHandler<CodeCompletionContextEventArgs> WordCompleted;
public override void Destroy ()
{
if (declarationviewwindow != null) {
declarationviewwindow.Destroy ();
declarationviewwindow = null;
}
if (mutableList != null) {
mutableList.Changing -= OnCompletionDataChanging;
mutableList.Changed -= OnCompletionDataChanged;
mutableList = null;
}
if (completionDataList != null) {
if (completionDataList is IDisposable)
((IDisposable)completionDataList).Dispose ();
completionDataList = null;
}
if (closedDelegate != null) {
closedDelegate ();
closedDelegate = null;
}
base.Destroy ();
}
void ListSizeChanged (object obj, SizeAllocatedArgs args)
{
UpdateDeclarationView ();
}
protected override void DoubleClick ()
{
CompleteWord ();
CompletionWindowManager.HideWindow ();
}
protected override void OnSelectionChanged ()
{
base.OnSelectionChanged ();
UpdateDeclarationView ();
}
bool declarationViewHidden = true;
int declarationViewX = -1, declarationViewY = -1;
uint declarationViewTimer = 0;
uint declarationViewWindowOpacityTimer = 0;
void UpdateDeclarationView ()
{
if (completionDataList == null || List.Selection >= completionDataList.Count || List.Selection == -1)
return;
if (List.GdkWindow == null)
return;
RemoveDeclarationViewTimer ();
// no selection, try to find a selection
if (List.SelectionIndex < 0 || List.SelectionIndex >= completionDataList.Count) {
List.CompletionString = PartialWord;
bool hasMismatches;
List.Selection = FindMatchedEntry (List.CompletionString, out hasMismatches);
}
// no success, hide declaration view
if (List.SelectionIndex < 0 || List.SelectionIndex >= completionDataList.Count) {
HideDeclarationView ();
return;
}
CompletionData data = completionDataList[List.SelectionIndex];
IList<CompletionData> overloads;
if (data.IsOverloaded) {
overloads = new List<CompletionData> (data.OverloadedData);
} else {
overloads = new CompletionData[] { data };
}
if (data != currentData) {
HideDeclarationView ();
declarationviewwindow.Clear ();
declarationviewwindow.Realize ();
foreach (CompletionData overload in overloads) {
bool hasMarkup = (overload.DisplayFlags & DisplayFlags.DescriptionHasMarkup) != 0;
declarationviewwindow.AddOverload (hasMarkup ? overload.Description : GLib.Markup.EscapeText (overload.Description));
}
declarationviewwindow.Multiple = data.IsOverloaded;
currentData = data;
if (data.IsOverloaded) {
for (int i = 0; i < overloads.Count; i++) {
if ((overloads[i].DisplayFlags & DisplayFlags.Obsolete) != DisplayFlags.Obsolete) {
declarationviewwindow.CurrentOverload = i;
break;
}
}
}
}
if (declarationviewwindow.DescriptionMarkup.Length == 0) {
HideDeclarationView ();
return;
}
if (currentData != null)
declarationViewTimer = GLib.Timeout.Add (250, DelayedTooltipShow);
}
void HideDeclarationView ()
{
RemoveDeclarationViewTimer ();
if (declarationviewwindow != null) {
declarationviewwindow.Hide ();
declarationviewwindow.Opacity = 0;
}
declarationViewHidden = true;
declarationViewX = declarationViewY = -1;
}
void RemoveDeclarationViewTimer ()
{
if (declarationViewWindowOpacityTimer != 0) {
GLib.Source.Remove (declarationViewWindowOpacityTimer);
declarationViewWindowOpacityTimer = 0;
}
if (declarationViewTimer != 0) {
GLib.Source.Remove (declarationViewTimer);
declarationViewTimer = 0;
}
}
class OpacityTimer
{
public double Opacity { get; private set; }
CompletionListWindow window;
// static int num = 0;
// int id;
public OpacityTimer (CompletionListWindow window)
{
// id = num++;
this.window = window;
Opacity = 0.0;
window.declarationviewwindow.Opacity = Opacity;
}
public bool Timer ()
{
Opacity = System.Math.Min (1.0, Opacity + 0.33);
window.declarationviewwindow.Opacity = Opacity;
bool result = Math.Round (Opacity * 10.0) < 10;
if (!result)
window.declarationViewWindowOpacityTimer = 0;
return result;
}
}
bool DelayedTooltipShow ()
{
Gdk.Rectangle rect = List.GetRowArea (List.Selection);
if (rect.IsEmpty)
return false;
int listpos_x = 0, listpos_y = 0;
while (listpos_x == 0 || listpos_y == 0)
GetPosition (out listpos_x, out listpos_y);
int vert = listpos_y + rect.Y;
int lvWidth = 0, lvHeight = 0;
while (lvWidth == 0)
this.GdkWindow.GetSize (out lvWidth, out lvHeight);
if (vert >= listpos_y + lvHeight - 2 || vert < listpos_y) {
HideDeclarationView ();
return false;
}
/* if (vert >= listpos_y + lvHeight - 2) {
vert = listpos_y + lvHeight - rect.Height;
} else if (vert < listpos_y) {
vert = listpos_y;
}*/
if (declarationViewHidden) {
declarationviewwindow.Move (this.Screen.Width + 1, vert);
declarationviewwindow.SetFixedWidth (-1);
declarationviewwindow.ReshowWithInitialSize ();
declarationviewwindow.Show ();
if (declarationViewWindowOpacityTimer != 0)
GLib.Source.Remove (declarationViewWindowOpacityTimer);
declarationViewWindowOpacityTimer = GLib.Timeout.Add (50, new OpacityTimer (this).Timer);
declarationViewHidden = false;
}
Gdk.Rectangle geometry = Screen.GetMonitorGeometry (Screen.GetMonitorAtWindow (GdkWindow));
Requisition req = declarationviewwindow.SizeRequest ();
int dvwWidth = req.Width;
int horiz = listpos_x + lvWidth + declarationWindowMargin;
if (geometry.Right - horiz >= lvWidth) {
if (geometry.Right - horiz < dvwWidth)
declarationviewwindow.SetFixedWidth (geometry.Right - horiz);
} else {
if (listpos_x - dvwWidth - declarationWindowMargin < 0) {
declarationviewwindow.SetFixedWidth (listpos_x - declarationWindowMargin);
dvwWidth = declarationviewwindow.SizeRequest ().Width;
}
horiz = curXPos - dvwWidth - declarationWindowMargin;
}
if (declarationViewX != horiz || declarationViewY != vert) {
declarationviewwindow.Move (horiz, vert);
declarationViewX = horiz;
declarationViewY = vert;
}
declarationViewTimer = 0;
return false;
}
#region IListDataProvider
int IListDataProvider.ItemCount
{
get { return completionDataList.Count; }
}
CompletionCategory IListDataProvider.GetCompletionCategory (int n)
{
return completionDataList[n].CompletionCategory;
}
string IListDataProvider.GetText (int n)
{
return completionDataList[n].DisplayText;
}
string IListDataProvider.GetDescription (int n)
{
return completionDataList[n].DisplayDescription;
}
bool IListDataProvider.HasMarkup (int n)
{
return (completionDataList[n].DisplayFlags & DisplayFlags.Obsolete) != 0;
}
//NOTE: we only ever return markup for items marked as obsolete
string IListDataProvider.GetMarkup (int n)
{
CompletionData completionData = completionDataList[n];
if (!completionData.IsOverloaded && (completionData.DisplayFlags & DisplayFlags.Obsolete) == DisplayFlags.Obsolete ||
completionData.OverloadedData.All (data => (data.DisplayFlags & DisplayFlags.Obsolete) == DisplayFlags.Obsolete))
return "<s>" + GLib.Markup.EscapeText (completionDataList[n].DisplayText) + "</s>";
return GLib.Markup.EscapeText (completionDataList[n].DisplayText);
}
string IListDataProvider.GetCompletionText (int n)
{
return completionDataList[n].CompletionText;
}
Gdk.Pixbuf IListDataProvider.GetIcon (int n)
{
string iconName = completionDataList[n].Icon;
if (string.IsNullOrEmpty (iconName))
return null;
return ImageService.GetPixbuf (iconName, Gtk.IconSize.Menu);
}
#endregion
internal bool IsChanging {
get { return mutableList != null && mutableList.IsChanging; }
}
void OnCompletionDataChanging (object s, EventArgs args)
{
if (parsingMessage == null) {
VBox box = new VBox ();
box.PackStart (new Gtk.HSeparator (), false, false, 0);
HBox hbox = new HBox ();
hbox.BorderWidth = 3;
hbox.PackStart (new Gtk.Image ("md-parser", Gtk.IconSize.Menu), false, false, 0);
Gtk.Label lab = new Gtk.Label (GettextCatalog.GetString ("Gathering class information..."));
lab.Xalign = 0;
hbox.PackStart (lab, true, true, 3);
hbox.ShowAll ();
parsingMessage = hbox;
}
ShowFooter (parsingMessage);
}
void OnCompletionDataChanged (object s, EventArgs args)
{
ResetSizes ();
//try to capture full selection state so as not to interrupt user
string last = null;
if (Visible)
last = List.AutoSelect ? CurrentCompletionText : PartialWord;
HideFooter ();
if (Visible) {
//don't reset the user-entered word when refilling the list
var tmp = this.List.AutoSelect;
Reset (false);
this.List.AutoSelect = tmp;
FillList ();
if (last != null )
SelectEntry (last);
}
}
}
}
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