xref: /webtrees/app/Services/ClipboardService.php (revision 4fbeb707df82fa5025e6110f443695700edd846c) 
1<?php
2/**
3 * webtrees: online genealogy
4 * Copyright (C) 2019 webtrees development team
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16declare(strict_types=1);
17
18namespace Fisharebest\Webtrees\Services;
19
20use Fisharebest\Webtrees\Fact;
21use Fisharebest\Webtrees\GedcomRecord;
22use Fisharebest\Webtrees\Session;
23use Illuminate\Support\Collection;
24
25/**
26 * Copy and past facts between records.
27 */
28class ClipboardService
29{
30    // Maximum number of entries in the clipboard.
31    private const CLIPBOARD_SIZE = 10;
32
33    /**
34     * Copy a fact to the clipboard.
35     *
36     * @param Fact $fact
37     */
38    public function copyFact(Fact $fact): void
39    {
40        $clipboard   = Session::get('clipboard', []);
41        $record_type = $fact->record()::RECORD_TYPE;
42        $fact_id     = $fact->id();
43
44        // If we are copying the same fact twice, make sure the new one is at the end.
45        unset($clipboard[$record_type][$fact_id]);
46
47        $clipboard[$record_type][$fact_id] = [
48            'factrec' => $fact->gedcom(),
49            'fact'    => $fact->getTag(),
50        ];
51
52        // The clipboard only holds a limited number of facts.
53        $clipboard[$record_type] = array_slice($clipboard[$record_type], -self::CLIPBOARD_SIZE);
54
55        Session::put('clipboard', $clipboard);
56    }
57
58    /**
59     * Copy a fact from the clipboard to a record.
60     *
61     * @param string       $fact_id
62     * @param GedcomRecord $record
63     *
64     * @return bool
65     */
66    public function pasteFact(string $fact_id, GedcomRecord $record): bool
67    {
68        $clipboard = Session::get('clipboard');
69
70        $record_type = $record::RECORD_TYPE;
71
72        if (isset($clipboard[$record_type][$fact_id])) {
73            $record->createFact($clipboard[$record_type][$fact_id]['factrec'], true);
74
75            return true;
76        }
77
78        return false;
79    }
80
81    /**
82     * Create a list of facts that can be pasted into a given record
83     *
84     * @param GedcomRecord $record
85     * @param Collection   $exclude_types
86     *
87     * @return Collection|Fact[]
88     */
89    public function pastableFacts(GedcomRecord $record, Collection $exclude_types): Collection
90    {
91        // The facts are stored in the session.
92        return (new Collection(Session::get('clipboard', [])[$record::RECORD_TYPE] ?? []))
93            // Put the most recently copied fact at the top of the list.
94            ->reverse()
95            // Create facts for the record.
96            ->map(function (array $clipping) use ($record): Fact {
97                return new Fact($clipping['factrec'], $record, md5($clipping['factrec']));
98            })->filter(function (Fact $fact) use ($exclude_types): bool {
99                return $exclude_types->isEmpty() || !$exclude_types->contains($fact->getTag());
100            });
101    }
102
103    /**
104     * Find facts of a given type, from all records.
105     *
106     * @param GedcomRecord $record
107     * @param Collection   $types
108     *
109     * @return Collection|Fact[]
110     */
111    public function pastableFactsOfType(GedcomRecord $record, Collection $types): Collection
112    {
113        // The facts are stored in the session.
114        return (new Collection(Session::get('clipboard', [])))
115            ->flatten(1)
116            ->reverse()
117            ->map(function (array $clipping) use ($record): Fact {
118                return new Fact($clipping['factrec'], $record, md5($clipping['factrec']));
119            })
120            ->filter(function (Fact $fact) use ($types): bool {
121                return $types->contains($fact->getTag());
122            });
123    }
124}
125