Cleanup

1 files changed, 205 insertions, 0 deletions

diff --git a/ext/fg/js/driver.js b/ext/fg/js/driver.js
new file mode 100644
index 00000000..de097980
--- /dev/null
+++ b/ext/fg/js/driver.js
@@ -0,0 +1,205 @@
+/*
+ * Copyright (C) 2016  Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+
+class Driver {
+    constructor() {
+        this.popup = new Popup();
+        this.audio = {};
+        this.lastMousePos = null;
+        this.lastTextSource = null;
+        this.pendingLookup = false;
+        this.enabled = false;
+        this.options = {};
+        this.definitions = null;
+        this.sequence = 0;
+        this.fgRoot = chrome.extension.getURL('fg');
+
+        chrome.runtime.onMessage.addListener(this.onBgMessage.bind(this));
+        window.addEventListener('message', this.onFrameMessage.bind(this));
+        window.addEventListener('mousedown', this.onMouseDown.bind(this));
+        window.addEventListener('mousemove', this.onMouseMove.bind(this));
+        window.addEventListener('keydown', this.onKeyDown.bind(this));
+        window.addEventListener('scroll', e => this.hidePopup());
+        window.addEventListener('resize', e => this.hidePopup());
+    }
+
+    onKeyDown(e) {
+        if (this.enabled && this.lastMousePos !== null && (e.keyCode === 16 || e.charCode === 16)) {
+            this.searchAt(this.lastMousePos);
+        }
+    }
+
+    onMouseMove(e) {
+        this.lastMousePos = {x: e.clientX, y: e.clientY};
+        if (this.enabled && (e.shiftKey || e.which === 2)) {
+            this.searchAt(this.lastMousePos);
+        }
+    }
+
+    onMouseDown(e) {
+        this.lastMousePos = {x: e.clientX, y: e.clientY};
+        if (this.enabled && (e.shiftKey || e.which === 2)) {
+            this.searchAt(this.lastMousePos);
+        } else {
+            this.hidePopup();
+        }
+    }
+
+    onBgMessage({action, params}, sender, callback) {
+        const method = this['api_' + action];
+        if (typeof(method) === 'function') {
+            method.call(this, params);
+        }
+
+        callback();
+    }
+
+    onFrameMessage(e) {
+        const {action, params} = e.data, method = this['api_' + action];
+        if (typeof(method) === 'function') {
+            method.call(this, params);
+        }
+    }
+
+    searchAt(point) {
+        if (this.pendingLookup) {
+            return;
+        }
+
+        const textSource = textSourceFromPoint(point);
+        if (textSource === null || !textSource.containsPoint(point)) {
+            this.hidePopup();
+            return;
+        }
+
+        if (this.lastTextSource !== null && this.lastTextSource.equals(textSource)) {
+            return;
+        }
+
+        textSource.setEndOffset(this.options.scanLength);
+
+        this.pendingLookup = true;
+        findTerm(textSource.text()).then(({definitions, length}) => {
+            if (length === 0) {
+                this.pendingLookup = false;
+                this.hidePopup();
+            } else {
+                textSource.setEndOffset(length);
+
+                const sentence = extractSentence(textSource, this.options.sentenceExtent);
+                definitions.forEach(definition => {
+                    definition.url = window.location.href;
+                    definition.sentence = sentence;
+                });
+
+                const sequence = ++this.sequence;
+                return renderText({definitions, sequence, root: this.fgRoot, options: this.options}, 'term-list.html').then(content => {
+                    this.definitions = definitions;
+                    this.pendingLookup = false;
+                    this.showPopup(textSource, content);
+                    return canAddDefinitions(definitions, ['term_kanji', 'term_kana']);
+                }).then(states => {
+                    if (states !== null) {
+                        states.forEach((state, index) => this.popup.invokeApi('setActionState', {index, state, sequence}));
+                    }
+                });
+            }
+        });
+    }
+
+    showPopup(textSource, content) {
+        this.popup.showNextTo(textSource.getRect(), content);
+
+        if (this.options.selectMatchedText) {
+            textSource.select();
+        }
+
+        this.lastTextSource = textSource;
+    }
+
+    hidePopup() {
+        this.popup.hide();
+
+        if (this.options.selectMatchedText && this.lastTextSource !== null) {
+            this.lastTextSource.deselect();
+        }
+
+        this.lastTextSource = null;
+        this.definitions = null;
+    }
+
+    api_setOptions(opts) {
+        this.options = opts;
+    }
+
+    api_setEnabled(enabled) {
+        if (!(this.enabled = enabled)) {
+            this.hidePopup();
+        }
+    }
+
+    api_addNote({index, mode}) {
+        const state = {[mode]: false};
+        addDefinition(this.definitions[index], mode).then(success => {
+            if (success) {
+                this.popup.invokeApi('setActionState', {index, state, sequence: this.sequence});
+            } else {
+                alert('Note could not be added');
+            }
+        });
+    }
+
+    api_playAudio(index) {
+        const definition = this.definitions[index];
+
+        let url = `https://assets.languagepod101.com/dictionary/japanese/audiomp3.php?kanji=${encodeURIComponent(definition.expression)}`;
+        if (definition.reading) {
+            url += `&kana=${encodeURIComponent(definition.reading)}`;
+        }
+
+        for (const key in this.audio) {
+            this.audio[key].pause();
+        }
+
+        const audio = this.audio[url] || new Audio(url);
+        audio.currentTime = 0;
+        audio.play();
+
+        this.audio[url] = audio;
+    }
+
+    api_displayKanji(kanji) {
+        findKanji(kanji).then(definitions => {
+            definitions.forEach(definition => definition.url = window.location.href);
+
+            const sequence = ++this.sequence;
+            return renderText({definitions, sequence, root: this.fgRoot, options: this.options}, 'kanji-list.html').then(content => {
+                this.definitions = definitions;
+                this.popup.setContent(content, definitions);
+                return canAddDefinitions(definitions, ['kanji']);
+            }).then(states => {
+                if (states !== null) {
+                    states.forEach((state, index) => this.popup.invokeApi('setActionState', {index, state, sequence}));
+                }
+            });
+        });
+    }
+}
+
+window.driver = new Driver();