source: ps/trunk/binaries/data/mods/public/gui/session/trade/BarterButton.js@ 23072

/**
 * This class manages a buy and sell button for one resource.
 * The sell button selects the resource to be sold.
 * The buy button selects the resource to be bought and performs the sale.
 */
class BarterButton
{
    constructor(barterButtonManager, resourceCode, i, panel)
    {
        this.barterButtonManager = barterButtonManager;
        this.resourceCode = resourceCode;
        this.amountToSell = 0;

        this.sellButton = panel.children[i].children[0].children[0];
        this.sellIcon = this.sellButton.children[0];
        this.sellAmount = this.sellButton.children[1];
        this.sellSelection = this.sellButton.children[2];

        this.buyButton = panel.children[i].children[0].children[1];
        this.buyIcon= this.buyButton.children[0];
        this.buyAmount = this.buyButton.children[1];

        let resourceName = { "resource": resourceNameWithinSentence(resourceCode) };

        this.sellButton.tooltip = sprintf(this.SellTooltip, resourceName);
        this.sellButton.onPress = () => { barterButtonManager.setSelectedResource(this.resourceCode); };
        this.sellButton.hidden = false;

        this.buyButton.tooltip = sprintf(this.BuyTooltip, resourceName);
        this.buyButton.onPress = () => { this.buy(); };

        this.iconPath = this.ResourceIconPath + resourceCode + ".png";

        setPanelObjectPosition(panel.children[i], i, Infinity);
    }

    buy()
    {
        Engine.PostNetworkCommand({
            "type": "barter",
            "sell": this.barterButtonManager.selectedResource,
            "buy": this.resourceCode,
            "amount": this.amountToSell
        });
    }

    /**
     * The viewed player might be the owner of the selected market.
     */
    update(viewedPlayer)
    {
        this.amountToSell = this.BarterResourceSellQuantity;

        if (Engine.HotkeyIsPressed("session.massbarter"))
            this.amountToSell *= this.Multiplier;

        let neededResourcesSell = Engine.GuiInterfaceCall("GetNeededResources", {
            "cost": {
                [this.resourceCode]: this.amountToSell
            },
            "player": viewedPlayer
        });

        let neededResourcesBuy = Engine.GuiInterfaceCall("GetNeededResources", {
            "cost": {
                [this.barterButtonManager.selectedResource]: this.amountToSell
            },
            "player": viewedPlayer
        });

        let isSelected = this.resourceCode == this.barterButtonManager.selectedResource;
        let icon = "stretched:" +  (isSelected ? this.SelectedModifier : "") + this.iconPath;
        this.sellIcon.sprite = (neededResourcesSell ? this.DisabledModifier : "") + icon;
        this.buyIcon.sprite = (neededResourcesBuy ? this.DisabledModifier : "") + icon;

        this.sellAmount.caption = sprintf(translateWithContext("sell action", this.SellCaption), {
            "amount": this.amountToSell
        });

        let prices = GetSimState().players[viewedPlayer].barterPrices;

        this.buyAmount.caption = sprintf(translateWithContext("buy action", this.BuyCaption), {
            "amount": Math.round(
                prices.sell[this.barterButtonManager.selectedResource] /
                prices.buy[this.resourceCode] * this.amountToSell)
        });

        this.buyButton.hidden = isSelected;
        this.buyButton.enabled = controlsPlayer(viewedPlayer);
        this.sellSelection.hidden = !isSelected;
    }
}

BarterButton.getWidth = function(panel)
{
    let size = panel.children[0].size;
    return size.right - size.left;
};

BarterButton.prototype.BuyTooltip = markForTranslation("Buy %(resource)s");
BarterButton.prototype.SellTooltip = markForTranslation("Sell %(resource)s");
BarterButton.prototype.BuyCaption = markForTranslationWithContext("buy action", "+%(amount)s");
BarterButton.prototype.SellCaption = markForTranslationWithContext("sell action", "-%(amount)s");

/**
 * The barter constants should match with the simulation Quantity of goods to sell per click.
 */
BarterButton.prototype.BarterResourceSellQuantity = 100;

/**
 * Multiplier to be applied when holding the massbarter hotkey.
 */
BarterButton.prototype.Multiplier = 5;

BarterButton.prototype.SelectedModifier = "color:0 0 0 100:grayscale:";

BarterButton.prototype.DisabledModifier = "color:255 0 0 80:";

BarterButton.prototype.ResourceIconPath = "session/icons/resources/";