LoTROInterface SVN KragenBars

[/] [branches/] [3.21/] [UI/] [ComboBox.lua] - Blame information for rev 72

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import "Turbine.UI";
 
ComboBox = class(Turbine.UI.Control);
 
-- colors
ComboBox.HighlightColor = Turbine.UI.Color(232/255, 175/255, 72/255);
ComboBox.SelectionColor = Turbine.UI.Color(203/255, 195/255, 52/255);
ComboBox.ItemColor = Turbine.UI.Color(245/255, 222/255, 147/255);
ComboBox.DisabledColor = Turbine.UI.Color(162/255, 162/255, 162/255);
ComboBox.BlackColor = Turbine.UI.Color(1, 0, 0, 0);
 
-- create a var to store the open dropdown in
ComboBox.open = nil;
 
-- close any open dropdowns
ComboBox.Cleanup = function()
    if (ComboBox.open ~= nil) then
        ComboBox.open:CloseDropDown();
        ComboBox.open = nil;
    end
end
 
function ComboBox:Constructor()
    Turbine.UI.Control.Constructor(self);
 
    self:SetBackColor(ComboBox.DisabledColor);
    --self:SetZOrder(5);
 
    -- state
    self.dropped = false;
    self.selection = -1;
 
    -- text label
    self.label = Turbine.UI.Label();
    self.label:SetParent(self);
    self.label:SetFont(Turbine.UI.Lotro.Font.TrajanPro14);
    self.label:SetForeColor(ComboBox.ItemColor);
    self.label:SetBackColor(ComboBox.BlackColor);
    self.label:SetOutlineColor(ComboBox.HighlightColor);
    self.label:SetTextAlignment(Turbine.UI.ContentAlignment.MiddleCenter);
    self.label:SetMouseVisible(false);
 
    -- arrow
    self.arrow = Turbine.UI.Control();
    self.arrow:SetParent(self);
    self.arrow:SetSize(16, 16);
    self.arrow:SetZOrder(20);
    self.arrow:SetBlendMode(Turbine.UI.BlendMode.AlphaBlend);
    self.arrow:SetBackground("KragenPlugs/UI/Resources/dropdown_arrow_closed.tga");
    self.arrow:SetMouseVisible(false);
 
    -- drop down window
    self.dropDownWindow = Turbine.UI.Window();
    self.dropDownWindow:SetBackColor(ComboBox.DisabledColor);
    self.dropDownWindow:SetZOrder(30);
    self.dropDownWindow:SetVisible(false);
 
    -- list scroll bar
    self.scrollBar = Turbine.UI.Lotro.ScrollBar();
    self.scrollBar:SetOrientation(Turbine.UI.Orientation.Vertical);
    self.scrollBar:SetParent(self.dropDownWindow);
    self.scrollBar:SetBackColor(ComboBox.BlackColor);
 
    -- list to contain the drop down items
    self.listBox = Turbine.UI.ListBox();
    self.listBox:SetParent(self.dropDownWindow);
    self.listBox:SetOrientation(Turbine.UI.Orientation.Horizontal);
    self.listBox:SetVerticalScrollBar(self.scrollBar);
    self.listBox:SetMaxItemsPerLine(1);
    self.listBox:SetMouseVisible(false);
    self.listBox:SetPosition(2, 2);
    self.listBox:SetBackColor(ComboBox.BlackColor);
end
 
function ComboBox:MouseEnter(args)
    if (not self:IsEnabled()) then
        return;
    end
 
    self.label:SetFontStyle(Turbine.UI.FontStyle.Outline);
    self.label:SetForeColor(ComboBox.ItemColor);
    self.label:SetText(self.label:GetText());
 
    self.arrow:SetBackground("KragenPlugs/UI/Resources/dropdown_arrow_"..(self.dropped and "open_rollover" or "closed_rollover")..".tga");
end
 
function ComboBox:MouseLeave(args)
    if (not self:IsEnabled()) then
        return;
    end
 
    self.label:SetFontStyle(Turbine.UI.FontStyle.None);
    if (self.dropped) then
        self.label:SetForeColor(ComboBox.SelectionColor);
    end
    self.label:SetText(self.label:GetText());
 
    self.arrow:SetBackground("KragenPlugs/UI/Resources/dropdown_arrow_"..(self.dropped and "open" or "closed")..".tga");
end
 
function ComboBox:MouseClick(args)
    if (not self:IsEnabled()) then
        return;
    end
 
    if (args.Button == Turbine.UI.MouseButton.Left) then
        if (self.dropped) then
            self:CloseDropDown();
        else
            self:ShowDropDown();
        end
    end
end
 
function ComboBox:FireEvent()
    if (type(self.SelectedIndexChanged) == "function") then
        self:SelectedIndexChanged({selection=self:GetSelection()});
    end
end
 
function ComboBox:ItemSelected(index)
    if (self.selection ~= -1) then
        local old = self.listBox:GetItem(self.selection);
        old:SetForeColor(ComboBox.ItemColor);
    end
 
    local item = self.listBox:GetItem(index);
    self.selection = index;
    item:SetForeColor(ComboBox.SelectionColor);
    self.label:SetText(item:GetText());
 
    self:CloseDropDown();
end
 
function ComboBox:AddItem(text, value)
    local width, height = self.listBox:GetSize();
 
    local listItem = Turbine.UI.Label();
    listItem:SetSize(width, 20);
    listItem:SetTextAlignment(Turbine.UI.ContentAlignment.MiddleCenter);
    listItem:SetForeColor(ComboBox.ItemColor);
    listItem:SetFont(Turbine.UI.Lotro.Font.TrajanPro14);
    listItem:SetOutlineColor(ComboBox.HighlightColor);
    listItem:SetText(text);
 
    listItem.MouseEnter = function(sender, args)
        sender:SetFontStyle(Turbine.UI.FontStyle.Outline);
        sender:SetForeColor(ComboBox.ItemColor);
        sender:SetText(sender:GetText());
    end
    listItem.MouseLeave = function(sender, args)
        sender:SetFontStyle(Turbine.UI.FontStyle.None);
        if (self.listBox:IndexOfItem(sender) == self.selection) then
            sender:SetForeColor(ComboBox.SelectionColor);
        end
        sender:SetText(sender:GetText());
    end
    listItem.MouseClick = function(sender, args)
        if (args.Button == Turbine.UI.MouseButton.Left) then
            self:ItemSelected(self.listBox:GetSelectedIndex());
            self:FireEvent();
        end
    end
    listItem.value = value;
    self.listBox:AddItem(listItem);
end
 
function ComboBox:RemoveItem(value)
    for i = 1, self.listBox:GetItemCount() do
        local item = self.listBox:GetItem(i);
        if (item.value == value) then
            item:SetVisible(false);
            self.listBox:RemoveItemAt(i);
 
            -- if the removed item is the selection update it
            if (self.selection == i) then
                self.selection = -1;
                if (self.listBox:GetItemCount() > 0) then
                    self:ItemSelected(1);
                    self:FireEvent();
                else
                    self.label:SetText("");
                end
            end
            break;
        end
    end
end
 
function ComboBox:SetSelection(value)
    for i = 1, self.listBox:GetItemCount() do
        local item = self.listBox:GetItem(i);
        if (item.value == value) then
            self:ItemSelected(i);
            self:FireEvent();
            break;
        end
    end
end
 
function ComboBox:GetSelection()
    if (self.selection == -1) then
        return nil;
    else
        local item = self.listBox:GetItem(self.selection);
        return item.value;
    end
end
 
function ComboBox:UpdateSelectionText(text)
    if (self.selection ~= -1) then
        local item = self.listBox:GetItem(self.selection);
        item:SetText(text);
        self.label:SetText(text);
    end
end
 
function ComboBox:GetItemCount()
    return self.listBox:GetItemCount();
end
 
function ComboBox:GetItem(index)
    local item = self.listBox:GetItem(index);
    return item.value;
end
 
function ComboBox:SetSize(width, height)
    Turbine.UI.Control.SetSize(self, width, height);
    self:Layout();
end
 
function ComboBox:SetEnabled(enabled)
    Turbine.UI.Control.SetEnabled(self, enabled);
    if (enabled) then
        self.label:SetForeColor(ComboBox.ItemColor);
        self.arrow:SetBackground("KragenPlugs/UI/Resources/dropdown_arrow_closed.tga");
    else
        self:CloseDropDown();
        self.label:SetForeColor(ComboBox.DisabledColor);
        self.arrow:SetBackground("KragenPlugs/UI/Resources/dropdown_arrow_closed_ghosted.tga");
    end
end
 
function ComboBox:Layout()
    local width, height = self:GetSize();
    self.label:SetSize(width - 4, height - 4);
    self.label:SetPosition(2, 2);
    self.arrow:SetPosition(width - 2 - 16, 2 + ((height - 4 - 16) / 2));
end
 
function ComboBox:ShowDropDown()
    -- close the existing drop down if one is open
    ComboBox.Cleanup();
 
    local itemCount = self.listBox:GetItemCount();
    if ((itemCount > 0) and not (self.dropped)) then
        self.dropped = true;
        self.label:SetForeColor(ComboBox.SelectionColor);
        self.arrow:SetBackground("KragenPlugs/UI/Resources/dropdown_arrow_open_rollover.tga");
        local width, height = self:GetSize();
        --width = width + 10;
 
        -- max size
        local maxItems = itemCount;
        local scrollSize = 0;
        if (maxItems > 10) then
            maxItems = 10;
            scrollSize = 10;
        end
 
        -- list item sizes
        local listHeight = 0;
        for i = 1, self.listBox:GetItemCount() do
            local item = self.listBox:GetItem(i);
            item:SetWidth(width - 14);
            if (i <= maxItems) then
                listHeight = listHeight + item:GetHeight();
            end
        end
 
        -- window size
        self.listBox:SetSize(width - 4 - scrollSize, listHeight);
        self.dropDownWindow:SetSize(width, listHeight + 4);
 
        -- scrollbar
        self.scrollBar:SetSize(10, listHeight);
        self.scrollBar:SetPosition(width - 12, 2);
 
        -- position
        local x, y = self:GetParent():PointToScreen(self:GetPosition());
        self.dropDownWindow:SetPosition(x, y + height + 3);
 
        self.dropDownWindow:SetVisible(true);
 
        -- store the open drop down
        ComboBox.open = self;
    end
end
 
function ComboBox:CloseDropDown()
    if (self.dropped) then
        self.dropped = false;
        self.dropDownWindow:SetVisible(false);
        self.label:SetForeColor(ComboBox.ItemColor);
        self.arrow:SetBackground("KragenPlugs/UI/Resources/dropdown_arrow_closed_rollover.tga");
    end
end
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