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/**
* Copyright (C) 2021 Adrien Hopkins
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package sevenUnitsGUI;
import java.util.List;
import java.util.function.Function;
import java.util.function.Predicate;
import sevenUnits.unit.UnitDatabase;
import sevenUnits.unit.UnitPrefix;
import sevenUnits.utils.UncertainDouble;
/**
* An object that handles interactions between the view and the backend code
*
* @author Adrien Hopkins
* @since 2021-12-15
*/
public final class Presenter {
/**
* The view that this presenter communicates with
*/
private final View view;
/**
* The database that this presenter communicates with (effectively the model)
*/
private final UnitDatabase database;
// ====== SETTINGS ======
/**
* The rule used for parsing input numbers. Any number-string inputted into
* this program will be parsed using this method.
*/
private Function<String, UncertainDouble> numberParsingRule;
/**
* The rule used for displaying the results of unit conversions. The result
* of unit conversions will be put into this function, and the resulting
* string will be used in the output.
*/
private Function<UncertainDouble, String> numberDisplayRule;
/**
* A predicate that determines whether or not a certain combination of
* prefixes is allowed. If it returns false, a combination of prefixes will
* not be allowed. Prefixes are put in the list from right to left.
*/
private Predicate<List<UnitPrefix>> prefixRepetitionRule;
/**
* If this is true, views that show units as a list will have metric units
* removed from the From unit list and imperial/USC units removed from the To
* unit list.
*/
private boolean oneWayConversion;
/**
* If this is false, duplicate units will be removed from the unit view in
* views that show units as a list to choose from.
*/
private boolean showDuplicateUnits;
/**
* Creates a Presenter
*
* @param view the view that this presenter communicates with
* @since 2021-12-15
*/
public Presenter(View view) {
this.view = view;
this.database = new UnitDatabase();
}
/**
* Sets the dimension of the view's From and To units.
*
* @throws UnsupportedOperationException if the view does not support
* unit-based conversion (does not
* implement
* {@link UnitConversionView})
* @since 2021-12-15
*/
public void applyDimensionFilter() {}
/**
* Gets settings from the view and applies them to both view and presenter.
*
* @since 2021-12-15
*/
public void applySettings() {}
/**
* Converts from the view's input expression to its output expression.
* Displays an error message if any of the required fields are invalid.
*
* @throws UnsupportedOperationException if the view does not support
* expression-based conversion (does
* not implement
* {@link ExpressionConversionView})
* @since 2021-12-15
*/
public void convertExpressions() {}
/**
* Converts from the view's input unit to its output unit. Displays an error
* message if any of the required fields are invalid.
*
* @throws UnsupportedOperationException if the view does not support
* unit-based conversion (does not
* implement
* {@link UnitConversionView})
* @since 2021-12-15
*/
public void convertUnits() {}
/**
* Loads settings from the user's settings file and applies them to the view.
*
* @since 2021-12-15
*/
public void loadSettings() {}
/**
* Gets user settings from the view then saves them to the user's settings
* file.
*
* @since 2021-12-15
*/
public void saveSettings() {}
}
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