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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2022 - Raw Material Software Limited
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 7 End-User License
Agreement and JUCE Privacy Policy.
End User License Agreement: www.juce.com/juce-7-licence
Privacy Policy: www.juce.com/juce-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
#pragma once
//==============================================================================
class StartPageTreeHolder : public Component
{
public:
enum class Open { no, yes };
StartPageTreeHolder (const String& title,
const StringArray& headerNames,
const std::vector<StringArray>& itemNames,
std::function<void (int, int)>&& selectedCallback,
Open shouldBeOpen)
: headers (headerNames),
items (itemNames),
itemSelectedCallback (std::move (selectedCallback))
{
jassert (headers.size() == (int) items.size());
tree.setTitle (title);
tree.setRootItem (new TreeRootItem (*this));
tree.setRootItemVisible (false);
tree.setIndentSize (15);
tree.setDefaultOpenness (shouldBeOpen == Open::yes);
addAndMakeVisible (tree);
}
~StartPageTreeHolder() override
{
tree.deleteRootItem();
}
void paint (Graphics& g) override
{
g.fillAll (findColour (secondaryBackgroundColourId));
}
void resized() override
{
tree.setBounds (getLocalBounds());
}
void setSelectedItem (const String& category, int index)
{
auto* root = tree.getRootItem();
for (int i = root->getNumSubItems(); --i >=0;)
{
if (auto* item = root->getSubItem (i))
{
if (item->getUniqueName() == category)
item->getSubItem (index)->setSelected (true, true);
}
}
}
private:
//==============================================================================
class TreeSubItem : public TreeViewItem
{
public:
TreeSubItem (StartPageTreeHolder& o, const String& n, const StringArray& subItemsIn)
: owner (o), name (n), isHeader (subItemsIn.size() > 0)
{
for (auto& s : subItemsIn)
addSubItem (new TreeSubItem (owner, s, {}));
}
bool mightContainSubItems() override { return isHeader; }
bool canBeSelected() const override { return ! isHeader; }
int getItemWidth() const override { return -1; }
int getItemHeight() const override { return 25; }
String getUniqueName() const override { return name; }
String getAccessibilityName() override { return getUniqueName(); }
void paintOpenCloseButton (Graphics& g, const Rectangle<float>& area, Colour, bool isMouseOver) override
{
g.setColour (getOwnerView()->findColour (isSelected() ? defaultHighlightedTextColourId
: treeIconColourId));
TreeViewItem::paintOpenCloseButton (g, area, getOwnerView()->findColour (defaultIconColourId), isMouseOver);
}
void paintItem (Graphics& g, int w, int h) override
{
Rectangle<int> bounds (w, h);
auto shouldBeHighlighted = isSelected();
if (shouldBeHighlighted)
{
g.setColour (getOwnerView()->findColour (defaultHighlightColourId));
g.fillRect (bounds);
}
g.setColour (shouldBeHighlighted ? getOwnerView()->findColour (defaultHighlightedTextColourId)
: getOwnerView()->findColour (defaultTextColourId));
g.drawFittedText (name, bounds.reduced (5).withTrimmedLeft (10), Justification::centredLeft, 1);
}
void itemClicked (const MouseEvent& e) override
{
if (isSelected())
itemSelectionChanged (true);
if (e.mods.isPopupMenu() && mightContainSubItems())
setOpen (! isOpen());
}
void itemSelectionChanged (bool isNowSelected) override
{
jassert (! isHeader);
if (isNowSelected)
owner.itemSelectedCallback (getParentItem()->getIndexInParent(), getIndexInParent());
}
private:
StartPageTreeHolder& owner;
String name;
bool isHeader = false;
//==============================================================================
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (TreeSubItem)
};
struct TreeRootItem : public TreeViewItem
{
explicit TreeRootItem (StartPageTreeHolder& o)
: owner (o)
{
for (int i = 0; i < owner.headers.size(); ++i)
addSubItem (new TreeSubItem (owner, owner.headers[i], owner.items[(size_t) i]));
}
bool mightContainSubItems() override { return ! owner.headers.isEmpty();}
StartPageTreeHolder& owner;
//==============================================================================
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (TreeRootItem)
};
//==============================================================================
TreeView tree;
StringArray headers;
std::vector<StringArray> items;
std::function<void (int, int)> itemSelectedCallback;
//==============================================================================
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (StartPageTreeHolder)
};
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