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This commit is contained in:
John Cortell 2009-10-06 16:38:11 +00:00
parent 7c9a32d8e9
commit 9d137a3c63
1 changed files with 12 additions and 7 deletions
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19
dsf/org.eclipse.cdt.dsf.ui/src/org/eclipse/cdt/dsf/ui/viewmodel/DefaultVMModelProxyStrategy.java
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@ -262,7 +262,7 @@ public class DefaultVMModelProxyStrategy implements IVMModelProxy {
* Optimization 1: If the first-level child node does not have
* <code>IModelDelta.CONTENT</code> but one of its descendants does, then
* for optimization reasons we return <code>IModelDelta.STATE</code>
* instead.
* instead. See {@link DefaultVMModelProxyStrategy#buildChildDeltasForAllContexts(IVMNode, Object, VMDelta, int, RequestMonitor)}
*
* Optimization 2: If the parent delta contains
* <code>IModelDelta.CONTENT</code>, we do not need to specify it for its
@ -500,11 +500,15 @@ public class DefaultVMModelProxyStrategy implements IVMModelProxy {
return;
}
// Check if the child delta only has an IModelDelta.STATE flag.
// If that's the case, we can skip creating a delta for this node,
// because the TreeUpdatePolicy does not use the full path from the
// delta to handle these flags. Similarly, the index argument is
// not necessary either.
// Check if the child delta only has an IModelDelta.STATE flag. If
// that's the case, we can skip creating a delta for this node, because
// the Debug Platform's handling of that flag does not require ancestor
// deltas (doesn't need to know the path to the element)
//
// We can skip the delta for this node even if a deeper IVMNode child
// calls for an IModelDelta.CONTENT flag, since what we do in that case
// is have the CONTENT flag applied to the first ancestor delta that has
// something other than IModelDelta.STATE.
//
// For example: suppose the model looks like:
// A-
@ -517,7 +521,8 @@ public class DefaultVMModelProxyStrategy implements IVMModelProxy {
// |-III
// |-d
//
// And if VM Node responsible for element a, b, c, d needs a CONTENT update, then the delta may look like this:
// And if VM Node responsible for element a, b, c, d needs a CONTENT
// update, then the delta may look like this:
//
// Element: A
// Flags: CONTENT