public override float GetElementHeight(GUIContent label, TCollection collection, fiGraphMetadata metadata)
{
EnsureNotNull(ref collection);
var pageMetadata = GetPageMetadata(metadata);
float height = 0;
var adaptor = GetAdaptor(collection, metadata);
if (ShouldDisplayPageControls(collection))
{
VerifyPageIndices(pageMetadata, collection);
adaptor = new PageAdaptor(adaptor, pageMetadata.PageStartIndex, pageMetadata.PageEndIndex);
height += PagedRegionButtonHeight + PagedRegionVerticalMargin * 2;
}
height += DoGetElementHeight(label, collection, metadata, adaptor);
return(height);
}
public override TCollection Edit(Rect region, GUIContent label, TCollection collection, fiGraphMetadata metadata)
{
Rect initialRegion = region;
EnsureNotNull(ref collection);
var pageMetadata = GetPageMetadata(metadata);
var unpagedAdaptor = GetAdaptor(collection, metadata);
var adaptor = unpagedAdaptor;
// draw the title
if (ShouldDisplayTitleRegion(label))
{
Rect titleRect = new Rect(region);
titleRect.height = EditorGUIUtility.singleLineHeight;
region.y += titleRect.height;
region.height -= titleRect.height;
GUI.Label(titleRect, label);
}
if (ShouldDisplayPageControls(collection))
{
VerifyPageIndices(pageMetadata, collection);
Rect pagedRect = region;
pagedRect.y += PagedRegionVerticalMargin;
pagedRect.height = PagedRegionButtonHeight;
region.y += PagedRegionButtonHeight + PagedRegionVerticalMargin * 2;
region.height -= PagedRegionButtonHeight + PagedRegionVerticalMargin * 2;
const float margin_Empty_StartLabel = 10;
const float width_StartLabel = 100;
const float margin_StartLabel_StartIndex = 2;
const float width_StartIndex = 45;
const float margin_StartIndex_ThruLabel = 2;
const float width_ThruLabel = 20;
const float margin_ThruLabel_EndIndex = 2;
const float width_EndIndex = 45;
const float margin_EndIndex_OfCount = 2;
const float width_OfCountLabel = 500;
// -----
const float width_DecButton = 40;
const float margin_DecButton_IncButton = 1;
const float width_IncButton = 40;
const float margin_IncButton_Empty = 50;
const float regionIndexSelectorWidth =
margin_Empty_StartLabel +
width_StartLabel + margin_StartLabel_StartIndex +
width_StartIndex + margin_StartIndex_ThruLabel +
width_ThruLabel + margin_ThruLabel_EndIndex +
width_EndIndex + margin_EndIndex_OfCount +
width_OfCountLabel;
const float regionIncDecWidth =
width_DecButton + margin_DecButton_IncButton + width_IncButton + margin_IncButton_Empty;
Rect rect_RegionIndexSelector, rect_RegionIncDec, rectDummy;
fiRectUtility.SplitHorizontalFlexibleMiddle(pagedRect, regionIndexSelectorWidth, regionIncDecWidth,
out rect_RegionIndexSelector, out rectDummy, out rect_RegionIncDec);
fiRectUtility.CenterRect(rect_RegionIndexSelector, EditorGUIUtility.singleLineHeight,
out rect_RegionIndexSelector);
Rect rect_StartLabel, rect_StartIndex, rect_ThruLabel, rect_EndIndex, rect_OfCountLabel;
{
float startX = rect_RegionIndexSelector.x + margin_Empty_StartLabel;
rect_StartLabel = rect_RegionIndexSelector;
rect_StartLabel.x = startX;
rect_StartLabel.width = width_StartLabel;
startX += width_StartLabel + margin_StartLabel_StartIndex;
rect_StartIndex = rect_RegionIndexSelector;
rect_StartIndex.x = startX;
rect_StartIndex.width = width_StartIndex;
startX += width_StartIndex + margin_StartIndex_ThruLabel;
rect_ThruLabel = rect_RegionIndexSelector;
rect_ThruLabel.x = startX;
rect_ThruLabel.width = width_ThruLabel;
startX += width_ThruLabel + margin_ThruLabel_EndIndex;
rect_EndIndex = rect_RegionIndexSelector;
rect_EndIndex.x = startX;
rect_EndIndex.width = width_EndIndex;
startX += width_EndIndex + margin_EndIndex_OfCount;
rect_OfCountLabel = rect_RegionIndexSelector;
rect_OfCountLabel.x = startX;
rect_OfCountLabel.width = width_OfCountLabel;
}
Rect rect_IncButton, rect_DecButton;
{
float startX = rect_RegionIncDec.x;
rect_DecButton = rect_RegionIncDec;
rect_DecButton.x = startX;
rect_DecButton.width = width_DecButton;
startX += width_IncButton + margin_DecButton_IncButton;
rect_IncButton = rect_RegionIncDec;
rect_IncButton.x = startX;
rect_IncButton.width = width_IncButton;
}
if (unpagedAdaptor.Count > 0)
{
GUI.Label(rect_StartLabel, "Showing indices ");
EditorGUI.BeginChangeCheck();
int newStartIndex = EditorGUI.IntField(rect_StartIndex, pageMetadata.PageStartIndex);
if (EditorGUI.EndChangeCheck())
{
EnsureWithinLimits(ref newStartIndex, 0, collection.Count);
if (newStartIndex > pageMetadata.PageEndIndex)
{
ShiftPageForward(pageMetadata, newStartIndex - pageMetadata.PageStartIndex, collection.Count);
}
else
{
pageMetadata.PageStartIndex = newStartIndex;
}
}
GUI.Label(rect_ThruLabel, " - ");
EditorGUI.BeginChangeCheck();
int newEndIndex = EditorGUI.IntField(rect_EndIndex, pageMetadata.PageEndIndex);
if (EditorGUI.EndChangeCheck())
{
// we could do the auto shifting going backwards, but it is
// easy to accidentaly trigger when typing, say, 150, as Unity
// will give us an assigned value of 1 which causes a shift
// to 1 length making it annoying, so we disable it
/*
* EnsureWithinLimits(ref newEndIndex, 0, collection.Count);
* if (newEndIndex <= _pageStartIndex) {
* ShiftPageBackward(_pageEndIndex - newEndIndex);
* }
* else {
* _pageEndIndex = newEndIndex;
* }*/
if (newEndIndex < pageMetadata.PageStartIndex)
{
newEndIndex = pageMetadata.PageStartIndex;
}
EnsureWithinLimits(ref newEndIndex, 0, collection.Count);
pageMetadata.PageEndIndex = newEndIndex;
}
GUI.Label(rect_OfCountLabel, " of " + (collection.Count - 1));
}
else
{
GUI.Label(rect_StartLabel, "Empty collection");
}
EditorGUI.BeginDisabledGroup(!(pageMetadata.PageStartIndex > 0));
if (GUI.Button(rect_DecButton, "<<"))
{
ShiftPageBackward(pageMetadata, pageMetadata.PageEndIndex - pageMetadata.PageStartIndex + 1);
}
EditorGUI.EndDisabledGroup();
EditorGUI.BeginDisabledGroup(!(pageMetadata.PageEndIndex < collection.Count - 1));
if (GUI.Button(rect_IncButton, ">>"))
{
ShiftPageForward(pageMetadata, pageMetadata.PageEndIndex - pageMetadata.PageStartIndex + 1, collection.Count);
}
EditorGUI.EndDisabledGroup();
adaptor = new PageAdaptor(unpagedAdaptor, pageMetadata.PageStartIndex, pageMetadata.PageEndIndex);
}
fiEditorGUI.PushHierarchyMode(false);
DoEdit(initialRegion, region, label, ref collection, metadata, adaptor);
fiEditorGUI.PopHierarchyMode();
OnPostEdit(ref collection, unpagedAdaptor);
// Keyed collections are wonky. The keys easily go stale. We rebuild the entire
// collection if anything inside of it has changed.
if (GUI.changed && IsKeyedCollection)
{
try {
var newInstance = default(TCollection);
EnsureNotNull(ref newInstance);
foreach (var node in collection)
{
newInstance.Add(node);
}
collection = newInstance;
} catch (Exception) {
Debug.LogError("This was an error when rebuilding the keyed collection. Undo the last edit or the collection will not deserialize.");
}
}
return(collection);
}