- port to minGw

git-svn-id: http://moon:8086/svn/software/trunk/projects/JaySynth@235 b431acfa-c32f-4a4a-93f1-934dc6c82436
2015-02-21 17:09:43 +00:00
parent 843c6e300c
commit cfc9645b0b
1093 changed files with 426078 additions and 143 deletions
@@ -0,0 +1,99 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2013 - Raw Material Software Ltd.
+
+   Permission is granted to use this software under the terms of either:
+   a) the GPL v2 (or any later version)
+   b) the Affero GPL v3
+
+   Details of these licenses can be found at: www.gnu.org/licenses
+
+   JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+   ------------------------------------------------------------------------------
+
+   To release a closed-source product which uses JUCE, commercial licenses are
+   available: visit www.juce.com for more information.
+
+  ==============================================================================
+*/
+
+#ifndef JUCE_UNDOABLEACTION_H_INCLUDED
+#define JUCE_UNDOABLEACTION_H_INCLUDED
+
+
+//==============================================================================
+/**
+    Used by the UndoManager class to store an action which can be done
+    and undone.
+
+    @see UndoManager
+*/
+class JUCE_API  UndoableAction
+{
+protected:
+    /** Creates an action. */
+    UndoableAction() noexcept   {}
+
+public:
+    /** Destructor. */
+    virtual ~UndoableAction()   {}
+
+    //==============================================================================
+    /** Overridden by a subclass to perform the action.
+
+        This method is called by the UndoManager, and shouldn't be used directly by
+        applications.
+
+        Be careful not to make any calls in a perform() method that could call
+        recursively back into the UndoManager::perform() method
+
+        @returns    true if the action could be performed.
+        @see UndoManager::perform
+    */
+    virtual bool perform() = 0;
+
+    /** Overridden by a subclass to undo the action.
+
+        This method is called by the UndoManager, and shouldn't be used directly by
+        applications.
+
+        Be careful not to make any calls in an undo() method that could call
+        recursively back into the UndoManager::perform() method
+
+        @returns    true if the action could be undone without any errors.
+        @see UndoManager::perform
+    */
+    virtual bool undo() = 0;
+
+    //==============================================================================
+    /** Returns a value to indicate how much memory this object takes up.
+
+        Because the UndoManager keeps a list of UndoableActions, this is used
+        to work out how much space each one will take up, so that the UndoManager
+        can work out how many to keep.
+
+        The default value returned here is 10 - units are arbitrary and
+        don't have to be accurate.
+
+        @see UndoManager::getNumberOfUnitsTakenUpByStoredCommands,
+             UndoManager::setMaxNumberOfStoredUnits
+    */
+    virtual int getSizeInUnits()    { return 10; }
+
+    /** Allows multiple actions to be coalesced into a single action object, to reduce storage space.
+
+        If possible, this method should create and return a single action that does the same job as
+        this one followed by the supplied action.
+
+        If it's not possible to merge the two actions, the method should return zero.
+    */
+    virtual UndoableAction* createCoalescedAction (UndoableAction* nextAction)  { (void) nextAction; return nullptr; }
+};
+
+
+#endif   // JUCE_UNDOABLEACTION_H_INCLUDED