Removing flicker

1 files changed, 197 insertions, 0 deletions

diff --git a/' b/'
new file mode 100644
index 00000000..14c0a95f
--- /dev/null
+++ b/'
@@ -0,0 +1,197 @@
+/*
+ * 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 Client {
+    constructor() {
+        this.popup        = new Popup();
+        this.lastMousePos = null;
+        this.lastRange    = null;
+        this.activateKey  = 16;
+        this.activateBtn  = 2;
+        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());
+
+        bgGetOptions((opts) => {
+            this.setOptions(opts);
+            bgGetState((state) => this.setEnabled(state === 'enabled'));
+        });
+    }
+
+    onKeyDown(e) {
+        if (this.enabled && this.lastMousePos !== null && (e.keyCode === this.activateKey || e.charCode === this.activateKey)) {
+            this.searchAt(this.lastMousePos);
+        }
+    }
+
+    onMouseMove(e) {
+        this.lastMousePos = {x: e.clientX, y: e.clientY};
+        if (this.enabled && (e.shiftKey || e.which === this.activateBtn)) {
+            this.searchAt(this.lastMousePos);
+        }
+    }
+
+    onMouseDown(e) {
+        this.lastMousePos = {x: e.clientX, y: e.clientY};
+        if (this.enabled && (e.shiftKey || e.which === this.activateBtn)) {
+            this.searchAt(this.lastMousePos);
+        } else {
+            this.hidePopup();
+        }
+    }
+
+    onBgMessage({name, value}, sender, callback) {
+        switch (name) {
+            case 'state':
+                this.setEnabled(value === 'enabled');
+                break;
+            case 'options':
+                this.setOptions(value);
+                break;
+        }
+
+        callback();
+    }
+
+    onFrameMessage(e) {
+        const {action, params} = e.data, handlers = {
+            addNote:      ({mode, index}) => this.actionAddNote(mode, index, (data) => e.source.postMessage(data, e.origin)),
+            displayKanji: this.actionDisplayKanji
+        };
+
+        if (handlers.hasOwnProperty(action)) {
+            handlers[action].call(this, params);
+        }
+    }
+
+    searchAt(point) {
+        const range = Range.fromPoint(point);
+        if (range === null || !range.containsPoint(point)) {
+            this.hidePopup();
+            return;
+        }
+
+        if (this.lastRange !== null && this.lastRange.compareOrigin(range) === 0) {
+            return;
+        }
+
+        range.setLength(this.options.scanLength);
+        bgFindTerm(range.text(), ({definitions, length}) => {
+            if (length === 0) {
+                this.hidePopup();
+            } else {
+                const sequence = this.sequence++;
+                range.setLength(length);
+                bgRenderText(
+                    {defs: definitions, root: this.fgRoot, options: this.options, sequence: sequence},
+                    'term-list.html',
+                    (content) => {
+                        this.definitions = definitions;
+                        this.showPopup(range, content);
+
+                        bgCanAddNotes(definitions, (states) => {
+                            if (states !== null) {
+                                states.forEach((state, index) => this.popup.sendMessage(
+                                    'setActionState',
+                                    {index: index, state: state, sequence: sequence}
+                                ));
+                            }
+                        });
+                    }
+                );
+            }
+        });
+    }
+
+    actionAddNote(mode, index, callback) {
+        const state = {};
+        state[mode] = false;
+
+        this.popup.sendMessage(
+            'setActionState',
+            {index: index, state: state, sequence: this.sequence}
+        );
+    }
+
+    actionDisplayKanji(kanji) {
+        bgFindKanji(kanji, (definitions) => {
+            const sequence = this.sequence++;
+            bgRenderText(
+                {defs: definitions, root: this.fgRoot, options: this.options, sequence: sequence},
+                'kanji-list.html',
+                (content) => {
+                    this.definitions = definitions;
+                    this.popup.setContent(content, definitions);
+
+                    bgCanAddNotes(definitions, (states) => {
+                        if (states !== null) {
+                            states.forEach((state, index) => this.popup.sendMessage(
+                                'setActionState',
+                                {index: index, state: state, sequence: sequence}
+                            ));
+                        }
+                    });
+                }
+            );
+        });
+    }
+
+    showPopup(range, content) {
+        this.popup.showNextTo(range.getRect(), content);
+
+        if (this.options.selectMatchedText) {
+            range.select();
+        }
+
+        this.lastRange = range;
+    }
+
+    hidePopup() {
+        this.popup.hide();
+
+        if (this.options.selectMatchedText && this.lastRange !== null) {
+            this.lastRange.deselect();
+        }
+
+        this.lastRange   = null;
+        this.definitions = null;
+    }
+
+    setEnabled(enabled) {
+        if (!(this.enabled = enabled)) {
+            this.hidePopup();
+        }
+    }
+
+    setOptions(opts) {
+        this.options = opts;
+    }
+}
+
+window.yomiClient = new Client();