add first/last page key shortcut

README.md

@@ -51,31 +51,39 @@ $ cointop
 List of shortcuts:
 
 Key|Action
-----|------
+----|------|
 <kbd>↑</kbd>|navigate up
 <kbd>↓</kbd>|navigate down
 <kbd>→</kbd>|next page
 <kbd>←</kbd>|previous page
+<kbd>Page Up</kbd>|page up
+<kbd>Page Down</kbd>|page down
+<kbd>Home</kbd>|navigate to first line of page
+<kbd>End</kbd>|navigate to last line of page
 <kbd>Enter</kbd>|visit highlighted coin on CoinMarketCap
 <kbd>Esc</kbd>|alias to quit
 <kbd>Space</kbd>|alias to enter key
 <kbd>Ctrl</kbd>+<kbd>c</kbd>|alias to quit
-<kbd>Ctrl</kbd>+<kbd>d</kbd>|page down
-<kbd>Ctrl</kbd>+<kbd>n</kbd>|alias to next page
-<kbd>Ctrl</kbd>+<kbd>p</kbd>|alias to previous page
+<kbd>Ctrl</kbd>+<kbd>d</kbd>|page down (vim style)
+<kbd>Ctrl</kbd>+<kbd>n</kbd>|next page (vim style)
+<kbd>Ctrl</kbd>+<kbd>p</kbd>|previous page (vim style)
 <kbd>Ctrl</kbd>+<kbd>r</kbd>|force refresh
-<kbd>Ctrl</kbd>+<kbd>u</kbd>|page up
+<kbd>Ctrl</kbd>+<kbd>u</kbd>|page up (vim style)
+<kbd>0</kbd>|navigate to first page (vim style)
 <kbd>1</kbd>|sort by *[1] hour change*
 <kbd>2</kbd>|sort by *[2]4 hour change*
 <kbd>7</kbd>|sort by *[7] day change*
 <kbd>a</kbd>|sort by *[a]vailable supply*
-<kbd>g</kbd>|navigate to first line
-<kbd>G</kbd>|navigate to last line
-<kbd>h</kbd>|alias to previous page
-<kbd>j</kbd>|alias to navigate down
-<kbd>k</kbd>|alias to navigate up
-<kbd>l</kbd>|alias to next page
+<kbd>g</kbd>|navigate to first line of page  (vim style)
+<kbd>G</kbd>|navigate to last line of page (vim style)
+<kbd>h</kbd>|previous page (vim style)
+<kbd>H</kbd>|navigate to top of table window (vim style)
+<kbd>j</kbd>|navigate down (vim style)
+<kbd>k</kbd>|navigate up (vim style)
+<kbd>l</kbd>|next page (vim style)
+<kbd>L</kbd>|navigate to last line of table window (vim style)
 <kbd>m</kbd>|sort by *[m]arket cap*
+<kbd>M</kbd>|navigate to middle of table window (vim style)
 <kbd>n</kbd>|sort by *[n]ame*
 <kbd>p</kbd>|sort by *[p]rice*
 <kbd>r</kbd>|sort by *[r]ank*
@@ -84,6 +92,7 @@ Key|Action
 <kbd>u</kbd>|sort by *last [u]pdated*
 <kbd>v</kbd>|sort by *24 hour [v]olume*
 <kbd>q</kbd>|[q]uit
+<kbd>$</kbd>|navigate to last page (vim style)
 
 <!--
 |`h`|toggle [h]elp|

cointop/keybindings.go

@@ -25,6 +25,10 @@ func (ct *Cointop) keybindings(g *gocui.Gui) error {
 	ct.setKeybinding(gocui.KeyArrowDown, ct.cursorDown)
 	ct.setKeybinding(gocui.KeyArrowLeft, ct.prevPage)
 	ct.setKeybinding(gocui.KeyArrowRight, ct.nextPage)
+	ct.setKeybinding(gocui.KeyPgdn, ct.pageUp)
+	ct.setKeybinding(gocui.KeyPgup, ct.pageUp)
+	ct.setKeybinding(gocui.KeyHome, ct.navigateFirstLine)
+	ct.setKeybinding(gocui.KeyEnd, ct.navigateLastLine)
 	ct.setKeybinding(gocui.KeyEnter, ct.enter)
 	ct.setKeybinding(gocui.KeyEsc, ct.quit)
 	ct.setKeybinding(gocui.KeySpace, ct.enter)
@@ -34,6 +38,7 @@ func (ct *Cointop) keybindings(g *gocui.Gui) error {
 	ct.setKeybinding(gocui.KeyCtrlP, ct.prevPage)
 	ct.setKeybinding(gocui.KeyCtrlR, ct.refresh)
 	ct.setKeybinding(gocui.KeyCtrlU, ct.pageUp)
+	ct.setKeybinding('0', ct.firstPage)
 	ct.setKeybinding('1', ct.sortfn("1hchange", true))
 	ct.setKeybinding('2', ct.sortfn("24hchange", true))
 	ct.setKeybinding('7', ct.sortfn("7dchange", true))
@@ -41,10 +46,13 @@ func (ct *Cointop) keybindings(g *gocui.Gui) error {
 	ct.setKeybinding('g', ct.navigateFirstLine)
 	ct.setKeybinding('G', ct.navigateLastLine)
 	ct.setKeybinding('h', ct.prevPage)
+	ct.setKeybinding('H', ct.navigatePageFirstLine)
 	ct.setKeybinding('j', ct.cursorDown)
 	ct.setKeybinding('k', ct.cursorUp)
 	ct.setKeybinding('l', ct.nextPage)
+	ct.setKeybinding('L', ct.navigatePageLastLine)
 	ct.setKeybinding('m', ct.sortfn("marketcap", true))
+	ct.setKeybinding('M', ct.navigatePageMiddleLine)
 	ct.setKeybinding('n', ct.sortfn("name", true))
 	ct.setKeybinding('p', ct.sortfn("price", true))
 	ct.setKeybinding('r', ct.sortfn("rank", false))
@@ -53,6 +61,7 @@ func (ct *Cointop) keybindings(g *gocui.Gui) error {
 	ct.setKeybinding('u', ct.sortfn("lastupdated", true))
 	ct.setKeybinding('v', ct.sortfn("24hvolume", true))
 	ct.setKeybinding('q', ct.quit)
+	ct.setKeybinding('$', ct.lastPage)
 	return nil
 }
 

cointop/navigation.go

@@ -126,6 +126,44 @@ func (ct *Cointop) navigateLastLine(g *gocui.Gui, v *gocui.View) error {
 	return nil
 }
 
+func (ct *Cointop) navigatePageFirstLine(g *gocui.Gui, v *gocui.View) error {
+	if ct.tableview == nil {
+		return nil
+	}
+	cx, _ := ct.tableview.Cursor()
+	if err := ct.tableview.SetCursor(cx, 0); err != nil {
+		return err
+	}
+	ct.rowChanged()
+	return nil
+}
+
+func (ct *Cointop) navigatePageMiddleLine(g *gocui.Gui, v *gocui.View) error {
+	if ct.tableview == nil {
+		return nil
+	}
+	cx, _ := ct.tableview.Cursor()
+	_, sy := ct.tableview.Size()
+	if err := ct.tableview.SetCursor(cx, (sy/2)-1); err != nil {
+		return err
+	}
+	ct.rowChanged()
+	return nil
+}
+
+func (ct *Cointop) navigatePageLastLine(g *gocui.Gui, v *gocui.View) error {
+	if ct.tableview == nil {
+		return nil
+	}
+	cx, _ := ct.tableview.Cursor()
+	_, sy := ct.tableview.Size()
+	if err := ct.tableview.SetCursor(cx, sy-1); err != nil {
+		return err
+	}
+	ct.rowChanged()
+	return nil
+}
+
 func (ct *Cointop) prevPage(g *gocui.Gui, v *gocui.View) error {
 	if (ct.page - 1) >= 0 {
 		ct.page = ct.page - 1
@@ -143,3 +181,17 @@ func (ct *Cointop) nextPage(g *gocui.Gui, v *gocui.View) error {
 	ct.rowChanged()
 	return nil
 }
+
+func (ct *Cointop) firstPage(g *gocui.Gui, v *gocui.View) error {
+	ct.page = 0
+	ct.updateTable()
+	ct.rowChanged()
+	return nil
+}
+
+func (ct *Cointop) lastPage(g *gocui.Gui, v *gocui.View) error {
+	ct.page = len(ct.allcoins) / ct.perpage
+	ct.updateTable()
+	ct.rowChanged()
+	return nil
+}