From 332a3d98292429556710bc68d1baef238e5dd59b Mon Sep 17 00:00:00 2001
From: anekos
Date: Tue, 19 Aug 2008 11:57:36 +0000
Subject: initial release: スクロール可能な div
 要素をスクロールしたいプラグイン。動作不良バージョン。

git-svn-id: http://svn.coderepos.org/share/lang/javascript/vimperator-plugins/trunk@17905 d0d07461-0603-4401-acd4-de1884942a52
---
 scroll_div.js | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 scroll_div.js

(limited to 'scroll_div.js')

diff --git a/scroll_div.js b/scroll_div.js
new file mode 100644
index 0000000..dd7bbdf
--- /dev/null
+++ b/scroll_div.js
@@ -0,0 +1,94 @@
+(function () {
+
+  let re = /auto|scroll/i;
+
+  // FIXME!!!!!!!!  Firebug では overflow になってるのに false になったりする。
+  function isScrollable (e, doc) {
+    let s = doc.defaultView.getComputedStyle(e, null);
+    for each (let n in ['overflow', 'overflow-x', 'overflow-y']) {
+      //if (s[n] && s[n].match(/.+/)) liberator.log(n + ':' + s[n]);
+      if (s[n] && s[n].match(re))
+        return true;
+    }
+  }
+
+  // FIXME
+  function flashElement (e, doc) {
+    var indicator = doc.createElement("div");
+    indicator.id = "liberator-frame-indicator";
+    // NOTE: need to set a high z-index - it's a crapshoot!
+    var style = "background-color: red; opacity: 0.5; z-index: 999;" +
+                "position: fixed; top: 0; bottom: 0; left: 0; right: 0;";
+    indicator.setAttribute("style", style);
+    e.appendChild(indicator);
+
+    // remove the frame indicator
+    setTimeout(function () { e.removeChild(indicator); }, 500);
+  }
+
+  // スクロール可能な要素のリストを返す
+  function scrollableElements () {
+    let result = [];
+    let doc = content.document;
+
+    // var r = doc.evaluate("//div[contains(@style, 'overflow')]", doc, null, 7, null)
+    // for (var i = 0; i < r.snapshotLength; i++) {
+    //   r.snapshotItem(i).scrollTop += dy;
+    // }
+
+    var r = doc.evaluate("//div", doc, null, 7, null)
+    for (var i = 0; i < r.snapshotLength; i++) {
+      let e = r.snapshotItem(i);
+      if (isScrollable(e, doc))
+        result.push(e);
+    }
+
+    liberator.log(result.length);
+    return result;
+  }
+
+  // スクロール対象を変更
+  function shiftScrollElement () {
+    let idx = content.document.__div_scroller_index || 0;
+    let es = scrollableElements();
+    idx++;
+    if (idx >= es.length)
+      idx = 0;
+    content.document.__div_scroller_index = idx;
+  }
+
+  // 現在のスクロール対象を返す
+  function currentElement () {
+    let es = scrollableElements();
+    let idx = content.document.__div_scroller_index || 0;
+    liberator.log("idx: " + idx);
+    return es[idx];
+  }
+
+  // スクロールする
+  function scroll (dy) {
+    let elem = currentElement();
+    if (elem)
+      elem.scrollTop += dy;
+    //for each (let elem in scrollableElements())
+    //  elem.scrollTop += dy;
+  }
+
+  liberator.mappings.addUserMap(
+    [liberator.modes.NORMAL], 
+    ['<Leader>j'],
+    'Scroll down',
+    function () scroll(30)
+  );
+
+  liberator.mappings.addUserMap(
+    [liberator.modes.NORMAL], 
+    [']d'],
+    'Shift Scroll Element',
+    function () shiftScrollElement()
+  );
+
+
+
+
+})();
-- 
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