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87 lines
3.3 KiB
C++
87 lines
3.3 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2020 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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The code included in this file is provided under the terms of the ISC license
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http://www.isc.org/downloads/software-support-policy/isc-license. Permission
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To use, copy, modify, and/or distribute this software for any purpose with or
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without fee is hereby granted provided that the above copyright notice and
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this permission notice appear in all copies.
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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/** Base class for an entity that provides access to a blocks topology.
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@tags{Blocks}
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*/
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class TopologySource
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{
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public:
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//==============================================================================
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/** Destructor. */
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virtual ~TopologySource() = default;
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/** Returns the current topology that this object manages. */
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virtual BlockTopology getCurrentTopology() const = 0;
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/** Sets the TopologySource as active, occupying the midi port and trying to connect to the block devices */
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virtual void setActive (bool shouldBeActive) = 0;
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/** Returns true, if the TopologySource is currently trying to connect the block devices */
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virtual bool isActive() const = 0;
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/** Returns true if the topology is locked externally.*/
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virtual bool isLockedFromOutside() const = 0;
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//==============================================================================
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/** Used to receive callbacks for topology changes */
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struct Listener
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{
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virtual ~Listener() = default;
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/** Called for any change in topology - devices changed, connections changed, etc. */
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virtual void topologyChanged() {}
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/** Called when a new block is added to the topology. */
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virtual void blockAdded (const Block::Ptr) {}
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/** Called when a block is removed from the topology. */
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virtual void blockRemoved (const Block::Ptr) {}
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/** Called when a known block is updated.
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This could be because details have been received asynchronously. E.g. Block name.
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*/
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virtual void blockUpdated (const Block::Ptr) {}
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};
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void addListener (Listener* l) { listeners.add (l); }
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void removeListener (Listener* l) { listeners.remove (l); }
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/** Invoke this to force touches-off on all physical devices. */
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virtual void cancelAllActiveTouches() noexcept {}
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/** Gets blocks from the current topology. */
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Block::Array getBlocks() const { return getCurrentTopology().blocks; }
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/**Gets a block with given uid from the current topology*/
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Block::Ptr getBlockWithUID (Block::UID uid) const { return getCurrentTopology().getBlockWithUID (uid); }
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protected:
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//==============================================================================
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ListenerList<Listener> listeners;
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};
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} // namespace juce
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