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Minor enhancements to <C-i>/<C-o>

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This commit is contained in:
Kris Maglione
2011-08-09 14:50:51 -04:00
parent 9df1f7b6cf
commit 9bdb4411af
3 changed files with 44 additions and 20 deletions
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33
common/content/marks.js
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@@ -78,16 +78,32 @@ var Marks = Module("marks", {
/**
* Push the current buffer position onto the jump stack.
*
* @param {string} reason The reason for this scroll event. Multiple
* scroll events for the same reason are coalesced. @optional
*/
push: function push() {
push: function push(reason) {
let store = buffer.localStore;
let jump = store.jumps[store.jumpsIndex];
if (reason && jump && jump.reason == reason)
return;
let mark = this.add("'");
if (!this.jumping) {
let mark = this.add("'");
let store = buffer.localStore;
store.jumps[store.jumpsIndex++] = mark;
store.jumps.length = store.jumpsIndex;
store.jumps[++store.jumpsIndex] = { mark: mark, reason: reason };
store.jumps.length = store.jumpsIndex + 1;
if (store.jumps.length > this.maxJumps) {
store.jumps = store.jumps.slice(-this.maxJumps);
store.jumpsIndex = store.jumps.length - 1;
}
}
},
maxJumps: 200,
/**
* Jump to the given offset in the jump stack.
*
@@ -96,13 +112,16 @@ var Marks = Module("marks", {
* @returns {number} The actual change in offset.
*/
jump: function jump(offset) {
let store = buffer.localStore;
if (offset < 0 && store.jumpsIndex == store.jumps.length - 1)
this.push();
return this.withSavedValues(["jumping"], function _jump() {
this.jumping = true;
let store = buffer.localStore;
let idx = Math.constrain(store.jumpsIndex + offset, 0, store.jumps.length - 1);
let orig = store.jumpsIndex;
if (idx in store.jumps && !dactyl.trapErrors("_scrollTo", this, store.jumps[idx]))
if (idx in store.jumps && !dactyl.trapErrors("_scrollTo", this, store.jumps[idx].mark))
store.jumpsIndex = idx;
return store.jumpsIndex - orig;
});