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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI 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 JUCER_JUCERTREEVIEWBASE_H_INCLUDED
#define JUCER_JUCERTREEVIEWBASE_H_INCLUDED
class ProjectContentComponent;
class Project;
//==============================================================================
class JucerTreeViewBase : public TreeViewItem
{
public:
JucerTreeViewBase();
~JucerTreeViewBase();
int getItemWidth() const override { return -1; }
int getItemHeight() const override { return isRoot() ? 23 : 20; }
void paintOpenCloseButton (Graphics&, const Rectangle<float>& area, Colour backgroundColour, bool isMouseOver) override;
Component* createItemComponent() override;
void itemClicked (const MouseEvent& e) override;
void itemSelectionChanged (bool isNowSelected) override;
void itemDoubleClicked (const MouseEvent&) override;
void cancelDelayedSelectionTimer();
//==============================================================================
virtual bool isRoot() const { return false; }
virtual Font getFont() const;
virtual String getRenamingName() const = 0;
virtual String getDisplayName() const = 0;
virtual void setName (const String& newName) = 0;
virtual bool isMissing() = 0;
virtual Icon getIcon() const = 0;
virtual bool isIconCrossedOut() const { return false; }
virtual void paintIcon (Graphics& g, Rectangle<int> area) { getIcon().draw (g, area.reduced (2).toFloat(), isIconCrossedOut()); }
virtual void paintContent (Graphics& g, const Rectangle<int>& area);
virtual int getMillisecsAllowedForDragGesture() { return 120; };
virtual File getDraggableFile() const { return File(); }
void refreshSubItems();
virtual void deleteItem();
virtual void deleteAllSelectedItems();
virtual void showDocument();
virtual void showMultiSelectionPopupMenu();
virtual void showRenameBox();
void launchPopupMenu (PopupMenu&); // runs asynchronously, and produces a callback to handlePopupMenuResult().
virtual void showPopupMenu();
virtual void handlePopupMenuResult (int resultCode);
//==============================================================================
// To handle situations where an item gets deleted before openness is
// restored for it, this OpennessRestorer keeps only a pointer to the
// topmost tree item.
struct WholeTreeOpennessRestorer : public OpennessRestorer
{
WholeTreeOpennessRestorer (TreeViewItem& item) : OpennessRestorer (getTopLevelItem (item))
{}
private:
static TreeViewItem& getTopLevelItem (TreeViewItem& item)
{
if (TreeViewItem* const p = item.getParentItem())
return getTopLevelItem (*p);
return item;
}
};
int textX;
Colour getBackgroundColour() const;
Colour getContrastingColour (float contrast) const;
Colour getContrastingColour (Colour targetColour, float minContrast) const;
protected:
ProjectContentComponent* getProjectContentComponent() const;
virtual void addSubItems() {}
private:
class ItemSelectionTimer;
friend class ItemSelectionTimer;
ScopedPointer<Timer> delayedSelectionTimer;
WeakReference<JucerTreeViewBase>::Master masterReference;
friend class WeakReference<JucerTreeViewBase>;
void invokeShowDocument();
};
//==============================================================================
class TreePanelBase : public Component
{
public:
TreePanelBase (const Project* p, const String& treeviewID)
: project (p), opennessStateKey (treeviewID)
{
addAndMakeVisible (tree);
tree.setRootItemVisible (true);
tree.setDefaultOpenness (true);
tree.setColour (TreeView::backgroundColourId, Colours::transparentBlack);
tree.setIndentSize (14);
tree.getViewport()->setScrollBarThickness (14);
}
~TreePanelBase()
{
tree.setRootItem (nullptr);
}
void setRoot (JucerTreeViewBase*);
void saveOpenness();
void deleteSelectedItems()
{
if (rootItem != nullptr)
rootItem->deleteAllSelectedItems();
}
void setEmptyTreeMessage (const String& newMessage)
{
if (emptyTreeMessage != newMessage)
{
emptyTreeMessage = newMessage;
repaint();
}
}
static void drawEmptyPanelMessage (Component& comp, Graphics& g, const String& message)
{
const int fontHeight = 13;
const Rectangle<int> area (comp.getLocalBounds());
g.setColour (comp.findColour (mainBackgroundColourId).contrasting (0.7f));
g.setFont ((float) fontHeight);
g.drawFittedText (message, area.reduced (4, 2), Justification::centred, area.getHeight() / fontHeight);
}
void paint (Graphics& g) override
{
if (emptyTreeMessage.isNotEmpty() && (rootItem == nullptr || rootItem->getNumSubItems() == 0))
drawEmptyPanelMessage (*this, g, emptyTreeMessage);
}
void resized() override
{
tree.setBounds (getAvailableBounds());
}
Rectangle<int> getAvailableBounds() const
{
return Rectangle<int> (0, 2, getWidth() - 2, getHeight() - 2);
}
const Project* project;
TreeView tree;
ScopedPointer<JucerTreeViewBase> rootItem;
private:
String opennessStateKey, emptyTreeMessage;
};
//==============================================================================
class TreeItemComponent : public Component
{
public:
TreeItemComponent (JucerTreeViewBase& i) : item (i)
{
setInterceptsMouseClicks (false, true);
}
void paint (Graphics& g) override
{
g.setColour (Colours::black);
Rectangle<int> localBounds (getLocalBounds());
const int border = 5;
localBounds.removeFromLeft (border);
item.paintIcon (g, localBounds.removeFromLeft (15));
localBounds.removeFromLeft (border);
localBounds.removeFromRight (border);
item.paintContent (g, localBounds);
}
void resized() override
{
item.textX = getHeight() + 4;
Rectangle<int> r (getLocalBounds());
for (int i = buttons.size(); --i >= 0;)
buttons.getUnchecked(i)->setBounds (r.removeFromRight (r.getHeight()));
}
void addRightHandButton (Component* button)
{
buttons.add (button);
addAndMakeVisible (button);
}
JucerTreeViewBase& item;
OwnedArray<Component> buttons;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (TreeItemComponent)
};
#endif // JUCER_JUCERTREEVIEWBASE_H_INCLUDED
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