design/designer-base/src/main/java/com/fr/design/components/page/PageControlPanel.java

package com.fr.design.components.page;

import com.fr.base.svg.IconUtils;
import com.fr.design.gui.ibutton.UIButton;
import com.fr.design.gui.ilable.UILabel;

import javax.swing.BorderFactory;
import javax.swing.JPanel;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.function.Function;

/**
 * 翻页组件
 * 相关使用方式见 <a href="https://kms.fineres.com/pages/viewpage.action?pageId=415212013">翻页组件</a>
 *
 * created by Harrison on 2022/05/26
 **/
public class PageControlPanel extends JPanel {
    
    private static final long serialVersionUID = 8140501834691131305L;
    
    private static final Dimension PAGE_CONTROL_BUTTON_DIMENSION = new Dimension(20, 20);
    
    private UIButton previous;
    private Runnable previousAction;
    
    private UILabel content;
    private PageControlModel model;
    
    private UIButton next;
    private Runnable nextAction;
    
    public PageControlPanel(PageControlModel model) {
    
        this.model = model;
        setBorder(BorderFactory.createEmptyBorder());
        setLayout(new BorderLayout(6, 0));
    
        this.previous = new UIButton();
        previous.setPreferredSize(PAGE_CONTROL_BUTTON_DIMENSION);
        previous.setIcon(IconUtils.readIcon("/com/fr/design/standard/arrow/arrow_enable_left.svg"));
        previous.setDisabledIcon(IconUtils.readIcon("/com/fr/design/standard/arrow/arrow_disable_left.svg"));
        previous.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                performAction(previousAction);
            }
        });
    
        this.add(previous, BorderLayout.WEST);
        
        this.content = new UILabel(model.toContent());
        this.add(content, BorderLayout.CENTER);
    
        next = new UIButton();
        next.setPreferredSize(PAGE_CONTROL_BUTTON_DIMENSION);
        next.setIcon(IconUtils.readIcon("/com/fr/design/standard/arrow/arrow_enable_right.svg"));
        next.setDisabledIcon(IconUtils.readIcon("/com/fr/design/standard/arrow/arrow_disable_right.svg"));
        next.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                performAction(nextAction);
            }
        });
        this.add(next, BorderLayout.EAST);
        
        refresh();
    }
    
    public PageControlModel performPrevious() {
        
        update(PageControlModel::previous);
        return this.model;
    }
    
    public PageControlModel performNext() {
        
        update(PageControlModel::next);
        return this.model;
    }
    
    public PageControlModel getModel() {
    
        return this.model;
    }
    
    public void update(PageControlModel model) {
    
        this.model.setIndex(model.getIndex());
        this.model.setSummary(model.getSummary());
        refresh();
    }
    
    public void update(Function<PageControlModel, PageControlModel> updateAction) {
    
        PageControlModel newModel = updateAction.apply(this.model);
        update(newModel);
        refresh();
    }
    
    public void refresh() {
        
        this.content.setText(this.model.toContent());
        this.content.repaint();
        
        this.previous.setEnabled(true);
        this.next.setEnabled(true);
        if (model.getNumber() == 1) {
            // 禁用上一个
            disableButton(this.previous);
            // 禁用next
            if (model.getNumber() == model.getSummary()) {
                disableButton(this.next);
            }
            return;
        }
        
        // 禁用next
        if (model.getNumber() == model.getSummary()) {
            disableButton(this.next);
        }
    }
    
    private void enable(UIButton button) {
        
        button.setEnabled(true);
    }
    
    private void disableButton(UIButton button) {
        
        button.setEnabled(false);
    }
    
    private void performAction(Runnable action) {
    
        if (action != null) {
            action.run();
            refresh();
        }
    }
    
    public void actions(Runnable previousAction, Runnable nextAction) {
    
        this.previousAction = previousAction;
        this.nextAction = nextAction;
    }
    
}