1 files changed, 249 insertions, 0 deletions
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
new file mode 100644
index 00000000..5a51af6d
--- /dev/null
+++ b/ext/fg/js/frontend.js
@@ -0,0 +1,249 @@
+/*
+ * 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/>.
+ */
+
+
+window.frontend = new class {
+    constructor() {
+        this.popup = new Popup();
+        this.popupTimer = null;
+        this.lastMousePos = null;
+        this.mouseDownLeft = false;
+        this.mouseDownMiddle = false;
+        this.lastTextSource = null;
+        this.pendingLookup = false;
+        this.options = null;
+
+        bgOptionsGet().then(options => {
+            this.options = options;
+            window.addEventListener('mouseover', this.onMouseOver.bind(this));
+            window.addEventListener('mousedown', this.onMouseDown.bind(this));
+            window.addEventListener('mouseup', this.onMouseUp.bind(this));
+            window.addEventListener('mousemove', this.onMouseMove.bind(this));
+            window.addEventListener('resize', e => this.searchClear());
+            window.addEventListener('message', this.onFrameMessage.bind(this));
+            chrome.runtime.onMessage.addListener(this.onBgMessage.bind(this));
+        }).catch(this.handleError.bind(this));
+    }
+
+    popupTimerSet(callback) {
+        this.popupTimerClear();
+        this.popupTimer = window.setTimeout(callback, this.options.scanning.delay);
+    }
+
+    popupTimerClear() {
+        if (this.popupTimer) {
+            window.clearTimeout(this.popupTimer);
+            this.popupTimer = null;
+        }
+    }
+
+    onMouseOver(e) {
+        if (e.target === this.popup.container && this.popupTimer) {
+            this.popupTimerClear();
+        }
+    }
+
+    onMouseMove(e) {
+        this.lastMousePos = {x: e.clientX, y: e.clientY};
+        this.popupTimerClear();
+
+        if (!this.options.general.enable) {
+            return;
+        }
+
+        if (this.mouseDownLeft) {
+            return;
+        }
+
+        const mouseScan = this.mouseDownMiddle && this.options.scanning.middleMouse;
+        const keyScan =
+            this.options.scanning.modifier === 'alt' && e.altKey ||
+            this.options.scanning.modifier === 'ctrl' && e.ctrlKey ||
+            this.options.scanning.modifier === 'shift' && e.shiftKey ||
+            this.options.scanning.modifier === 'none';
+
+        if (!keyScan && !mouseScan) {
+            return;
+        }
+
+        const searchFunc = () => this.searchAt(this.lastMousePos);
+        if (this.options.scanning.modifier === 'none') {
+            this.popupTimerSet(searchFunc);
+        } else {
+            searchFunc();
+        }
+    }
+
+    onMouseDown(e) {
+        this.lastMousePos = {x: e.clientX, y: e.clientY};
+        this.popupTimerClear();
+        this.searchClear();
+
+        if (e.which === 1) {
+            this.mouseDownLeft = true;
+        } else if (e.which === 2) {
+            this.mouseDownMiddle = true;
+        }
+    }
+
+    onMouseUp(e) {
+        if (e.which === 1) {
+            this.mouseDownLeft = false;
+        } else if (e.which === 2) {
+            this.mouseDownMiddle = false;
+        }
+    }
+
+    onFrameMessage(e) {
+        const handlers = {
+            popupClose: () => {
+                this.searchClear();
+            },
+
+            selectionCopy: () => {
+                document.execCommand('copy');
+            }
+        };
+
+        const handler = handlers[e.data];
+        if (handler) {
+            handler();
+        }
+    }
+
+    onBgMessage({action, params}, sender, callback) {
+        const handlers = {
+            optionsSet: options => {
+                this.options = options;
+                if (!this.options.enable) {
+                    this.searchClear();
+                }
+            }
+        };
+
+        const handler = handlers[action];
+        if (handler) {
+            handler(params);
+        }
+
+        callback();
+    }
+
+    searchAt(point) {
+        if (this.pendingLookup) {
+            return;
+        }
+
+        const textSource = docRangeFromPoint(point);
+        if (!textSource || !textSource.containsPoint(point)) {
+            docImposterDestroy();
+            return;
+        }
+
+        if (this.lastTextSource && this.lastTextSource.equals(textSource)) {
+            return;
+        }
+
+        this.pendingLookup = true;
+        this.searchTerms(textSource).then(found => {
+            if (!found) {
+                return this.searchKanji(textSource);
+            }
+        }).catch(error => {
+            this.handleError(error, textSource);
+        }).then(() => {
+            docImposterDestroy();
+            this.pendingLookup = false;
+        });
+    }
+
+    searchTerms(textSource) {
+        textSource.setEndOffset(this.options.scanning.length);
+
+        return bgTermsFind(textSource.text()).then(({definitions, length}) => {
+            if (definitions.length === 0) {
+                return false;
+            } else {
+                textSource.setEndOffset(length);
+
+                const sentence = docSentenceExtract(textSource, this.options.anki.sentenceExt);
+                const url = window.location.href;
+                this.popup.showTermDefs(
+                    textSource.getRect(),
+                    definitions,
+                    this.options,
+                    {sentence, url}
+                );
+
+                this.lastTextSource = textSource;
+                if (this.options.scanning.selectText) {
+                    textSource.select();
+                }
+
+                return true;
+            }
+        });
+    }
+
+    searchKanji(textSource) {
+        textSource.setEndOffset(1);
+
+        return bgKanjiFind(textSource.text()).then(definitions => {
+            if (definitions.length === 0) {
+                return false;
+            } else {
+                const sentence = docSentenceExtract(textSource, this.options.anki.sentenceExt);
+                const url = window.location.href;
+                this.popup.showKanjiDefs(
+                    textSource.getRect(),
+                    definitions,
+                    this.options,
+                    {sentence, url}
+                );
+
+                this.lastTextSource = textSource;
+                if (this.options.scanning.selectText) {
+                    textSource.select();
+                }
+
+                return true;
+            }
+        });
+    }
+
+    searchClear() {
+        docImposterDestroy();
+        this.popup.hide();
+
+        if (this.options.scanning.selectText && this.lastTextSource) {
+            this.lastTextSource.deselect();
+        }
+
+        this.lastTextSource = null;
+    }
+
+    handleError(error, textSource) {
+        if (window.orphaned) {
+            if (textSource && this.options.scanning.modifier !== 'none') {
+                this.popup.showOrphaned(textSource.getRect(), this.options);
+            }
+        } else {
+            window.alert(`Error: ${error}`);
+        }
+    }
+};