aboutsummaryrefslogtreecommitdiff
path: root/html/text_entry_list.js
blob: ff63c79aa17a2a9a9ebd6d0e18aa618b7a9e768f (about) (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
/**
 * This file is part of Haketilo.
 *
 * Function: Driving a list of editable entries. Used to make UI for management
 *           of repo URLs and script allowing/blocking rules.
 *
 * Copyright (C) 2022 Wojtek Kosior
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * As additional permission under GNU GPL version 3 section 7, you
 * may distribute forms of that code without the copy of the GNU
 * GPL normally required by section 4, provided you include this
 * license notice and, in case of non-source distribution, a URL
 * through which recipients can access the Corresponding Source.
 * If you modify file(s) with this exception, you may extend this
 * exception to your version of the file(s), but you are not
 * obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 *
 * As a special exception to the GPL, any HTML file which merely
 * makes function calls to this code, and for that purpose
 * includes it by reference shall be deemed a separate work for
 * copyright law purposes. If you modify this code, you may extend
 * this exception to your version of the code, but you are not
 * obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * I, Wojtek Kosior, thereby promise not to sue for violation of this file's
 * license. Although I request that you do not make use of this code in a
 * proprietary program, I am not going to enforce this in court.
 */

#IMPORT html/dialog.js
#IMPORT common/indexeddb.js AS haketilodb

#FROM html/DOM_helpers.js IMPORT clone_template
#FROM common/patterns.js  IMPORT validate_normalize_url_pattern

const coll = new Intl.Collator();

function Entry(text, list, entry_idx) {
    Object.assign(this, clone_template("text_entry"));

    const editable = () => list.active_entry === this;
    this.exists = () => text !== null;

    /*
     * Called in the constructor when creating a completely new entry and as a
     * result of clicking on an existing entry in the list.
     */
    this.make_editable = () => {
	if (editable())
	    return;

	if (list.active_entry !== null)
	    list.active_entry.make_noneditable();

	list.active_entry = this;

	this.editable_view.classList.remove("hide");
	this.noneditable_view.classList.add("hide");

	this.input.value = text || "";
    }

    /*
     * Called when 'Cancel' is clicked, when another entry becomes editable and
     * when an entry ends being modified.
     */
    this.make_noneditable = () => {
	if (!editable())
	    return;

	list.active_entry = null;

	if (!this.exists()) {
	    this.main_div.remove();
	    return;
	}

	this.editable_view.classList.add("hide");
	this.noneditable_view.classList.remove("hide");
    }

    /*
     * The *_cb() calls are allowed to throw if an error occurs. It is expected
     * *_cb() will show some dialog that will block other clicks until they
     * returns/throw.
     */

    const add_clicked = async () => {
	if (!editable() || this.exists())
	    return;

	await list.create_cb(this.input.value);
	this.make_noneditable();
    }

    /*
     * Changing entry's text is not handled here, instead we wait for subsequent
     * item removal and creation requests from the outside.
     */
    const save_clicked = async () => {
	if (!editable() || !this.exists())
	    return;

	await list.replace_cb(text, this.input.value);
	this.make_noneditable();
    }

    const enter_hit = () => add_clicked().then(save_clicked);

    /*
     * Removing entry from the list is not handled here, instead we wait for
     * subsequent item removal requests from the outside.
     */
    const remove_clicked = async () => {
	if (editable() || !this.exists())
	    return;

	await list.remove_cb(text);
    }

    /*
     * Called from the outside after the entry got removed from the database. It
     * is assumed entry_exists() is true when this is called.
     */
    this.remove = () => {
	if (editable()) {
	    text = null;
	    this.save_but.classList.add("hide");
	    this.add_but.classList.remove("hide");
	} else {
	    this.main_div.remove();
	}
    }

    if (this.exists()) {
	this.text.innerText = text;
    } else {
	this.save_but.classList.add("hide");
	this.add_but.classList.remove("hide");
	this.make_editable();
    }

    for (const [node, cb] of [
	[this.save_but,         save_clicked],
	[this.add_but,          add_clicked],
	[this.remove_but,       remove_clicked],
	[this.cancel_but,       this.make_noneditable],
	[this.noneditable_view, this.make_editable],
    ])
	dialog.onevent(list.dialog_ctx, node, "click", cb);

    dialog.onevent(list.dialog_ctx, this.input, "keypress",
		   e => (e.key === 'Enter') && enter_hit());

    if (entry_idx > 0) {
	const prev_text = list.shown_texts[entry_idx - 1];
	list.entries_by_text.get(prev_text).main_div.after(this.main_div);
    } else {
	if (!editable() && list.active_entry && !list.active_entry.exists())
	    list.active_entry.main_div.after(this.main_div);
	else
	    list.list_div.prepend(this.main_div);
    }
}

function TextEntryList(dialog_ctx, destroy_cb,
		       remove_cb, create_cb, replace_cb) {
    Object.assign(this, {dialog_ctx, remove_cb, create_cb, replace_cb});
    Object.assign(this, clone_template("text_entry_list"));
    this.ul = document.createElement("ul");
    this.shown_texts = [];
    this.entries_by_text = new Map();
    this.active_entry = null;

    const find_entry_idx = text => {
	let left = 0, right = this.shown_texts.length;

	while (left < right) {
	    const mid = (left + right) >> 1;
	    if (coll.compare(text, this.shown_texts[mid]) > 0)
		left = mid + 1;
	    else /* <= 0 */
		right = mid;
	}

	return left;
    }

    this.remove = text => {
	if (!this.entries_by_text.has(text))
	    return;

	this.shown_texts.splice(find_entry_idx(text), 1);
	this.entries_by_text.get(text).remove();
	this.entries_by_text.delete(text)
    }

    this.add = text => {
	if (this.entries_by_text.has(text))
	    return;

	const idx = find_entry_idx(text);
	this.entries_by_text.set(text, new Entry(text, this, idx));
	this.shown_texts.splice(idx, 0, text);
    }

    this.destroy = () => {
	this.main_div.remove();
	destroy_cb();
    }

    const add_new = () => new Entry(null, this, 0);

    dialog.onevent(dialog_ctx, this.new_but, "click", add_new);
}

async function repo_list(dialog_ctx) {
    let list;

    function validate_normalize(repo_url) {
	let error_msg;

	/* In the future we might also try making a test connection. */
	if (!/^https:\/\/[^/.]+\.[^/.]+/.test(repo_url))
	    error_msg = "Provided URL is not valid.";

	if (!/^https:\/\//.test(repo_url))
	    error_msg = "Repository URLs shoud use https:// schema.";

	if (error_msg) {
	    dialog.error(dialog_ctx, error_msg);
	    throw error_msg;
	}

	return repo_url.replace(/\/*$/, "/");
    }

    async function remove_repo(repo_url) {
	dialog.loader(dialog_ctx, `Removing repository '${repo_url}'...`);

	try {
	    await haketilodb.del_repo(repo_url);
	    var removing_ok = true;
	} finally {
	    if (!removing_ok) {
		dialog.error(dialog_ctx,
			     `Failed to remove repository '${repo_url}' :(`);
	    }

	    dialog.close(dialog_ctx);
	}
    }

    async function create_repo(repo_url) {
	repo_url = validate_normalize(repo_url);

	dialog.loader(dialog_ctx, `Adding repository '${repo_url}'...`);

	try {
	    await haketilodb.set_repo(repo_url);
	    var adding_ok = true;
	} finally {
	    if (!adding_ok)
		dialog.error(dialog_ctx, `Failed to add repository '${repo_url}' :(`);

	    dialog.close(dialog_ctx);
	}
    }

    async function replace_repo(old_repo_url, new_repo_url) {
	if (old_repo_url === new_repo_url)
	    return;

	new_repo_url = validate_normalize(new_repo_url);

	dialog.loader(dialog_ctx, "Replacing repository...");

	try {
	    await haketilodb.set_repo(new_repo_url);
	    await haketilodb.del_repo(old_repo_url);
	    var replacing_ok = true;
	} finally {
	    if (!replacing_ok)
		dialog.error(dialog_ctx, "Failed to replace repository :(");

	    dialog.close(dialog_ctx);
	}
    }

    function onchange(change) {
	if (change.new_val)
	    list.add(change.key);
	else
	    list.remove(change.key);
    }

    dialog.loader(dialog_ctx, "Loading repositories...");
    const [tracking, items] = await haketilodb.track.repos(onchange);
    dialog.close(dialog_ctx);

    list = new TextEntryList(dialog_ctx, () => haketilodb.untrack(tracking),
			     remove_repo, create_repo, replace_repo);

    items.forEach(item => list.add(item.url));

    return list;
}
#EXPORT repo_list

async function blocking_allowing_lists(dialog_ctx) {
    function validate_normalize(url_pattern) {
	try {
	    return validate_normalize_url_pattern(url_pattern);
	} catch(e) {
	    dialog.error(dialog_ctx, e);
	    throw e;
	}
    }

    async function default_allowing_on(url_pattern, allow) {
	dialog.loader(dialog_ctx,
		      `Setting default scripts blocking policy on '${url_pattern}'...`);

	try {
	    await haketilodb.set_default_allowing(url_pattern);
	    var default_allowing_ok = true;
	} finally {
	    if (!default_allowing_ok) {
		dialog.error(dialog_ctx,
			     `Failed to remove rule for '${url_pattern}' :(`);
	    }

	    dialog.close(dialog_ctx);
	}
    }

    async function set_allowing_on(url_pattern, allow) {
	url_pattern = validate_normalize(url_pattern);

	const [action, action_cap] = allow ?
	      ["allowing", "Allowing"] : ["blocking", "Blocking"];
	dialog.loader(dialog_ctx, `${action_cap} scripts on '${url_pattern}'...`);

	try {
	    await haketilodb.set_allowed(url_pattern, allow);
	    var set_allowing_ok = true;
	} finally {
	    if (!set_allowing_ok)
		dialog.error(dialog_ctx,
			     `Failed to write ${action} rule for '${url_pattern}' :(`);

	    dialog.close(dialog_ctx);
	}
    }

    async function replace_allowing_on(old_pattern, new_pattern, allow) {
	new_pattern = validate_normalize(new_pattern);
	if (old_pattern === new_pattern)
	    return;

	const action = allow ? "allowing" : "blocking";
	dialog.loader(dialog_ctx, `Rewriting script ${action} rule...`);

	try {
	    await haketilodb.set_allowed(new_pattern, allow);
	    await haketilodb.set_default_allowing(old_pattern);
	    var replace_allowing_ok = true;
	} finally {
	    if (!replace_allowing_ok)
		dialog.error(dialog_ctx, `Failed to rewrite ${action} rule :(`);

	    dialog.close(dialog_ctx);
	}
    }

    let blocking_list, allowing_list;

    function onchange(change) {
	if (change.new_val) {
	    if (change.new_val.allow)
		var [to_add, to_remove] = [allowing_list, blocking_list];
	    else
		var [to_add, to_remove] = [blocking_list, allowing_list];

	    to_add.add(change.key);
	    to_remove.remove(change.key);
	} else {
	    blocking_list.remove(change.key);
	    allowing_list.remove(change.key);
	}
    }

    dialog.loader(dialog_ctx, "Loading script blocking settings...");
    const [tracking, items] = await haketilodb.track.blocking(onchange);
    dialog.close(dialog_ctx);

    let untrack_called = 0;
    function untrack() {
	if (++untrack_called === 2)
	    haketilodb.untrack(tracking);
    }

    const lists = [];
    for (const allow of [false, true]) {
	lists[allow + 0] =
	    new TextEntryList(dialog_ctx, untrack,
			      pattern => default_allowing_on(pattern),
			      pattern => set_allowing_on(pattern, allow),
			      (p1, p2) => replace_allowing_on(p1, p2, allow));
    }
    [blocking_list, allowing_list] = lists;

    for (const item of items) {
	if (item.allow)
	    allowing_list.add(item.pattern);
	else
	    blocking_list.add(item.pattern);
    }

    return lists;
}
#EXPORT blocking_allowing_lists