как установить JTree “ctrl” режим выбора, который будет всегда включаться

Question

как установить JTree “ctrl” режим выбора, который будет всегда включаться

Вы можете создать все возможные ключи, которые не являются None, а затем проверить, какой элемент попадает в какой ключ - с учетом None с:

data= {'product_id'  : [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11],
       'product_type': ['shirt', 'shirt', 'shirt', 'shirt', 'shirt', 'hat',
                        'hat', 'hat', 'hat', 'hat', 'hat', ],
       'color'       : [None, None, None, 'red', 'blue', None, 'blue', 
                        'blue', 'blue', 'red', 'red', ],
       'size'        : [None, 's', 'xl', None, None, 's', None, 's', 'xl', None, 'xl', ]}



from itertools import product

# create all keys without None in it     
p = product((t for t in set(data['product_type']) if t), 
            (c for c in set(data['color']) if c), 
            (s for s in set(data['size']) if s))

# create the things you have in stock
inventar = list( zip(data['product_id'],data['product_type'],data['color'],data['size']))
d = {}

# order things into its categories
for cat in p:
    d.setdefault(cat,set())  # uses a set to collect the IDs
    for item in inventar:
        TY, CO, SI = cat
        ID, TYPE, COLOR, SIZE = item

        # the (TYPE or TY) will substitute TY for any TYPE that is None etc.
        if (TYPE or TY)==TY and (COLOR or CO)==CO and (SIZE or SI)==SI:
            d[cat].add(ID)

print(d)

Вывод:

# category-key            id's that match
{('shirt', 'blue', 's') : {1, 2, 5}, 
 ('shirt', 'blue', 'xl'): {1, 3, 5}, 
 ('shirt', 'red', 's')  : {1, 2, 4}, 
 ('shirt', 'red', 'xl') : {1, 3, 4}, 
 ('hat', 'blue', 's')   : {8, 6, 7}, 
 ('hat', 'blue', 'xl')  : {9, 7}, 
 ('hat', 'red', 's')    : {10, 6},
 ('hat', 'red', 'xl')   : {10, 11}}

[ 1112] Доку:

itertools.product (* iterables)
zip (* iterables)
[ 116] проверка истинности значения

5

jtree user-interface swing java

задан Eng.Fouad 11 July 2012 в 11:17

1 ответ

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jtree user-interface swing java

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score 5 · Accepted Answer

Я думаю, что нашел решение

Необходимо будет расширить JTree и DefaultTreeSelectionModel.

JTree соответствующие методы:

/////////////////////////////////////////////////////
/////////////////////////////////////////////////////
/// Implement selection using "adding" only logic. //
/////////////////////////////////////////////////////
/////////////////////////////////////////////////////

@Override
public void setSelectionPath(TreePath path) {

    System.out.println("MLDebugJTree: setSelectionPath(" + path + ")");

    addSelectionPath(path);

    return;
    //super.setSelectionPath(path);
}

@Override
public void setSelectionPaths(TreePath[] paths) {

    System.out.println("MLDebugJTree: setSelectionPaths(" + paths + ")");

    addSelectionPaths(paths);

    return;
}

@Override
public void setSelectionRow(int row) {

    System.out.println("MLDebugJTree: setSelectionRow(" + row + ")");

    addSelectionRow(row);

    return;
    //super.setSelectionRow(row);
}

@Override
public void setSelectionRows(int[] rows) {

    System.out.println("MLDebugJTree: setSelectionRows(" + rows + ")");

    addSelectionRows(rows);

    return;
    //super.setSelectionRows(rows);
}

DefaultSelectionModel соответствующие методы:

package com.ml.tree2.model.impl;

import javax.swing.tree.DefaultTreeSelectionModel;
import javax.swing.tree.TreePath;

public class MLTreeSelectionModel extends DefaultTreeSelectionModel {
private static final long serialVersionUID = -4270031800448415780L;

@Override
public void addSelectionPath(TreePath path) {
    // Don't do overriding logic here because addSelectionPaths is ultimately called.
    super.addSelectionPath(path);
}

@Override
public void addSelectionPaths(TreePath[] paths) {
    if(paths != null) {
        for(TreePath path : paths) {

            TreePath[] toAdd = new TreePath[1];
            toAdd[0] = path;

            if (isPathSelected(path)) {
                // If path has been previously selected REMOVE THE SELECTION.
                super.removeSelectionPaths(toAdd);
            } else {
                // Else we really want to add the selection...
                super.addSelectionPaths(toAdd);
            }
        }
    }
}

HTH.