LambdaValueTreeListener Class Reference

Listens to ValueTree changes using lambda functions instead of virtual methods. More...

#include <gin_valuetreeutilities.h>

Inherits juce::ValueTree::Listener.

Public Member Functions
	LambdaValueTreeListener (juce::ValueTree v_)
	Creates a listener for the specified ValueTree.

Public Attributes
std::function< void()>	onChanged
	Called whenever any change occurs to the ValueTree.
std::function< void(juce::ValueTree &, const juce::Identifier &)>	onValueTreePropertyChanged
	Called when a property value changes.
std::function< void(juce::ValueTree &, juce::ValueTree &)>	onValueTreeChildAdded
	Called when a child is added.
std::function< void(juce::ValueTree &, juce::ValueTree &, int)>	onValueTreeChildRemoved
	Called when a child is removed.
std::function< void(juce::ValueTree &, int, int)>	onValueTreeChildOrderChanged
	Called when children are reordered.
std::function< void(juce::ValueTree &)>	onValueTreeParentChanged
	Called when the parent changes.
std::function< void(juce::ValueTree &)>	onValueTreeRedirected
	Called when the tree is redirected to a different shared state.

Detailed Description

Listens to ValueTree changes using lambda functions instead of virtual methods.

This class provides a more convenient way to listen to ValueTree changes by setting std::function callbacks rather than overriding virtual methods. You can set only the callbacks you're interested in.

Example usage:

LambdaValueTreeListener listener (myValueTree);
listener.onChanged = [this] { updateUI(); };
listener.onValueTreePropertyChanged = [this] (juce::ValueTree& v, const juce::Identifier& prop) {
    DBG ("Property changed: " + prop.toString());
};

See also

AsyncLambdaValueTreeListener

Constructor & Destructor Documentation

LambdaValueTreeListener()

LambdaValueTreeListener::LambdaValueTreeListener

(

juce::ValueTree

v_

)

Creates a listener for the specified ValueTree.

Parameters

v_	The ValueTree to listen to

Member Data Documentation

onChanged

std::function<void ()> LambdaValueTreeListener::onChanged

Called whenever any change occurs to the ValueTree.

onValueTreePropertyChanged

std::function<void (juce::ValueTree&, const juce::Identifier&)> LambdaValueTreeListener::onValueTreePropertyChanged

Called when a property value changes.

Parameters: (tree, property identifier)

onValueTreeChildAdded

std::function<void (juce::ValueTree&, juce::ValueTree&)> LambdaValueTreeListener::onValueTreeChildAdded

Called when a child is added.

Parameters: (parent tree, child that was added)

onValueTreeChildRemoved

std::function<void (juce::ValueTree&, juce::ValueTree&, int)> LambdaValueTreeListener::onValueTreeChildRemoved

Called when a child is removed.

Parameters: (parent tree, child that was removed, index)

onValueTreeChildOrderChanged

std::function<void (juce::ValueTree&, int, int)> LambdaValueTreeListener::onValueTreeChildOrderChanged

Called when children are reordered.

Parameters: (tree, old index, new index)

onValueTreeParentChanged

std::function<void (juce::ValueTree&)> LambdaValueTreeListener::onValueTreeParentChanged

Called when the parent changes.

Parameters: (tree whose parent changed)

onValueTreeRedirected

std::function<void (juce::ValueTree&)> LambdaValueTreeListener::onValueTreeRedirected

Called when the tree is redirected to a different shared state.

Parameters: (tree)

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The documentation for this class was generated from the following file:

• gin_valuetreeutilities.h