1 files changed, 0 insertions, 178 deletions
diff --git a/ext/mixed/js/display-history.js b/ext/mixed/js/display-history.js
deleted file mode 100644
index a6335521..00000000
--- a/ext/mixed/js/display-history.js
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-class DisplayHistory extends EventDispatcher {
-    constructor({clearable=true, useBrowserHistory=false}) {
-        super();
-        this._clearable = clearable;
-        this._useBrowserHistory = useBrowserHistory;
-        this._historyMap = new Map();
-
-        const historyState = history.state;
-        const {id, state} = isObject(historyState) ? historyState : {id: null, state: null};
-        this._current = this._createHistoryEntry(id, location.href, state, null, null);
-    }
-
-    get state() {
-        return this._current.state;
-    }
-
-    get content() {
-        return this._current.content;
-    }
-
-    get useBrowserHistory() {
-        return this._useBrowserHistory;
-    }
-
-    set useBrowserHistory(value) {
-        this._useBrowserHistory = value;
-    }
-
-    prepare() {
-        window.addEventListener('popstate', this._onPopState.bind(this), false);
-    }
-
-    hasNext() {
-        return this._current.next !== null;
-    }
-
-    hasPrevious() {
-        return this._current.previous !== null;
-    }
-
-    clear() {
-        if (!this._clearable) { return; }
-        this._clear();
-    }
-
-    back() {
-        return this._go(false);
-    }
-
-    forward() {
-        return this._go(true);
-    }
-
-    pushState(state, content, url) {
-        if (typeof url === 'undefined') { url = location.href; }
-
-        const entry = this._createHistoryEntry(null, url, state, content, this._current);
-        this._current.next = entry;
-        this._current = entry;
-        this._updateHistoryFromCurrent(!this._useBrowserHistory);
-    }
-
-    replaceState(state, content, url) {
-        if (typeof url === 'undefined') { url = location.href; }
-
-        this._current.url = url;
-        this._current.state = state;
-        this._current.content = content;
-        this._updateHistoryFromCurrent(true);
-    }
-
-    _onPopState() {
-        this._updateStateFromHistory();
-        this._triggerStateChanged(false);
-    }
-
-    _go(forward) {
-        const target = forward ? this._current.next : this._current.previous;
-        if (target === null) {
-            return false;
-        }
-
-        if (this._useBrowserHistory) {
-            if (forward) {
-                history.forward();
-            } else {
-                history.back();
-            }
-        } else {
-            this._current = target;
-            this._updateHistoryFromCurrent(true);
-        }
-
-        return true;
-    }
-
-    _triggerStateChanged(synthetic) {
-        this.trigger('stateChanged', {history: this, synthetic});
-    }
-
-    _updateHistoryFromCurrent(replace) {
-        const {id, state, url} = this._current;
-        if (replace) {
-            history.replaceState({id, state}, '', url);
-        } else {
-            history.pushState({id, state}, '', url);
-        }
-        this._triggerStateChanged(true);
-    }
-
-    _updateStateFromHistory() {
-        let state = history.state;
-        let id = null;
-        if (isObject(state)) {
-            id = state.id;
-            if (typeof id === 'string') {
-                const entry = this._historyMap.get(id);
-                if (typeof entry !== 'undefined') {
-                    // Valid
-                    this._current = entry;
-                    return;
-                }
-            }
-            // Partial state recovery
-            state = state.state;
-        } else {
-            state = null;
-        }
-
-        // Fallback
-        this._current.id = (typeof id === 'string' ? id : this._generateId());
-        this._current.state = state;
-        this._current.content = null;
-        this._clear();
-    }
-
-    _createHistoryEntry(id, url, state, content, previous) {
-        if (typeof id !== 'string') { id = this._generateId(); }
-        const entry = {
-            id,
-            url,
-            next: null,
-            previous,
-            state,
-            content
-        };
-        this._historyMap.set(id, entry);
-        return entry;
-    }
-
-    _generateId() {
-        return generateId(16);
-    }
-
-    _clear() {
-        this._historyMap.clear();
-        this._historyMap.set(this._current.id, this._current);
-        this._current.next = null;
-        this._current.previous = null;
-    }
-}