moon
/
enigma-bbs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

* Working, but buggy WIP rework of VerticalMenuView with scrolling

This commit is contained in:
Bryan Ashby 2015-05-06 21:19:24 -06:00
parent 0346cbc7cb
commit 7fc4858959
2 changed files with 36 additions and 97 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

130
core/vertical_menu_view.js
View File

@ -13,32 +13,14 @@ var _ = require('lodash');
exports.VerticalMenuView = VerticalMenuView;
function VerticalMenuView(options) {
options.cursor = options.cursor || 'hide';
options.cursor = options.cursor || 'hide';
options.justify = options.justify || 'center';
MenuView.call(this, options);
var self = this;
//
// :TODO: view.setDimens() would set autoSize to false. Otherwise, we cna scale @ setItems()
// topViewIndex = top visible item
// itemsInView = height * (1 + itemSpacing)
this.jumpVisibleToTop = function() {
this.visibleRange = {
top : 0,
bottom : this.maxVisibleItems,
};
};
this.jumpVisibleToBottom = function() {
this.visibleRange = {
top : this.items.length - this.jumpVisibleToTop,
bottom : this.items.length,
};
};
this.scaleDimension = function() {
this.performAutoScale = function() {
if(this.autoScale) {
this.dimens.height = (self.items.length * (self.itemSpacing + 1)) - (self.itemSpacing);
this.dimens.height = Math.min(this.dimens.height, self.client.term.termHeight - self.position.x);
@ -53,48 +35,7 @@ function VerticalMenuView(options) {
}
};
/*
this.calculateDimens = function() {
if(!self.dimens || !self.dimens.width) {
var l = 0;
self.items.forEach(function onItem(item) {
if(item.text.length > l) {
l = item.text.length;
}
});
self.dimens = self.dimens || {};
self.dimens.width = l;
}
if(this.items.length > 0) {
this.dimens.height = (self.items.length * (self.itemSpacing + 1)) - (self.itemSpacing);
} else {
this.dimens.height = 0;
}
};
*/
this.scaleDimension();
this.cacheVisiblePositions = function() {
if(self.positionCacheExpired) {
var x = self.position.x;
for(var i = this.visibleRange.top; i < this.visibleRange.bottom; ++i) {
if(i > 0) {
x += self.itemSpacing + 1;
}
self.items[i].xPosition = x;
}
self.positionCacheExpired = false;
}
};
this.scrollToVisible = function() {
};
this.performAutoScale();
this.cachePositions = function() {
if(self.positionCacheExpired) {
@ -111,33 +52,6 @@ function VerticalMenuView(options) {
}
};
this.changeSelection2 = function(fromIndex, toIndex) {
assert(!self.positionCacheExpired);
assert(fromIndex >= 0 && fromIndex <= self.items.length);
assert(toIndex >= 0 && toIndex <= self.items.length);
if(fromIndex === self.items.length - 1 && fromIndex > toIndex) {
console.log('jump to top')
this.redraw();
return;
} else if(0 === fromIndex && toIndex > fromIndex) {
console.log('jump to bottom')
this.redraw();
return;
}
/*if(fromIndex > toIndex && self.items.length === fromIndex) {
console.log('jump to top')
this.jumpVisibleToTop();
} else if(0 === fromIndex && fromIndex < toIndex) {
console.log('jump to bottom')
this.jumpVisibleToBottom();
}*/
};
this.changeSelection = function(fromIndex, toIndex) {
assert(!self.positionCacheExpired);
assert(fromIndex >= 0 && fromIndex <= self.items.length);
@ -174,7 +88,10 @@ util.inherits(VerticalMenuView, MenuView);
VerticalMenuView.prototype.redraw = function() {
VerticalMenuView.super_.prototype.redraw.call(this);
for(var i = this.visibleRange.top; i < this.visibleRange.bottom; ++i) {
var x = this.position.x;
for(var i = this.viewWindow.top; i <= this.viewWindow.bottom; ++i) {
this.items[i].xPosition = x;
x += this.itemSpacing + 1;
this.items[i].focused = this.focusedItemIndex === i;
this.drawItem(i);
}
@ -199,21 +116,39 @@ VerticalMenuView.prototype.onSpecialKeyPress = function(keyName) {
if(this.isSpecialKeyMapped('up', keyName)) {
if(0 === this.focusedItemIndex) {
this.focusedItemIndex = this.items.length - 1;
this.viewWindow = {
top : this.items.length - this.maxVisibleItems,
bottom : this.items.length - 1
};
} else {
this.focusedItemIndex--;
if(this.focusedItemIndex < this.viewWindow.top) {
this.viewWindow.top--;
this.viewWindow.bottom--;
}
}
} else if(this.isSpecialKeyMapped('down', keyName)) {
if(this.items.length - 1 === this.focusedItemIndex) {
this.focusedItemIndex = 0;
this.viewWindow = {
top : 0,
bottom : Math.min(this.focusedItemIndex + this.maxVisibleItems, this.items.length) - 1
};
} else {
this.focusedItemIndex++;
if(this.focusedItemIndex > this.viewWindow.bottom) {
this.viewWindow.top++;
this.viewWindow.bottom++;
}
}
}
if(prevFocusedItemIndex !== this.focusedItemIndex) {
this.changeSelection(prevFocusedItemIndex, this.focusedItemIndex);
this.changeSelection2(prevFocusedItemIndex, this.focusedItemIndex);
this.redraw();
}
VerticalMenuView.super_.prototype.onSpecialKeyPress.call(this, keyName);
@ -228,9 +163,12 @@ VerticalMenuView.prototype.setItems = function(items) {
this.positionCacheExpired = true;
this.cachePositions();
this.scaleDimension();
this.performAutoScale();
this.maxVisibleItems = this.dimens.height / (this.itemSpacing + 1);
this.jumpVisibleToTop();
this.viewWindow = {
top : this.focusedItemIndex,
bottom : Math.min(this.focusedItemIndex + this.maxVisibleItems, this.items.length) - 1
};
};

3
mods/menu.json
View File

@ -233,7 +233,8 @@
"Some More Stuff",
"Other"
],
"height" : 4,
"height" : 8,
"width" : 33,
"itemSpacing" : 1,
// :TODO: justify not working??
"focusTextStyle" : "small i"